<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" [
<!ENTITY legal SYSTEM "legal.xml">
<!ENTITY appversion "5.5.37">
<!ENTITY manrevision "2.9">
<!ENTITY date "March 2005">
<!ENTITY app "<application>gcalctool</application>">
<!ENTITY appname "Calculator">
<!ENTITY ldquo "&#147;">
<!-- Left Double Quote --><!ENTITY rdquo "&#148;">
<!-- Right Double Quote -->]>
<!-- 
      (Do not remove this comment block.)
  Maintained by the GNOME Documentation Project
  http://developer.gnome.org/projects/gdp
  Template version: 2.0 beta
  Template last modified Feb 06, 2003
-->
<!-- =============Document Header ============================= -->
<article id="index" lang="zh_HK">
<!-- please do not change the id; for translations, change lang to -->
<!-- appropriate code -->
  <articleinfo> 
    <title><application>gcalctool</application> Manual</title>       

    <abstract role="description">
      <para>
      gcalctool is a calculator for GNOME. It includes basic, advanced, 
      financial, and scientific modes and uses a multiple precision package 
      to do its arithmetic to give a high degree of accuracy.
      </para>
    </abstract>

    <copyright> 
      <year>2003 年</year> 
      <year>2004</year> 
      <year>2005</year>
      <holder>Sun Microsystems</holder> 
    </copyright> 
<!-- translators: uncomment this:

  <copyright>
   <year>2003</year>
   <holder>ME-THE-TRANSLATOR (Latin translation)</holder>
  </copyright>

   -->
    <publisher role="maintainer"> 
      <publishername>GNOME 文件專案</publishername> 
    </publisher> 

     <legalnotice id="legalnotice">
	<para>根據自由軟體基金會 (Free Software Foundation) 所發佈 的 GNU 自由文件授權 (GNU Free Documentation License, GFDL) 1.1 (含) 以後版本， 使用者可以複製、散佈，或修改本文件，但不得增刪章節，不得加上封面文字， 亦不得加上封底文字。 如要取得 GFDL 的副本，請參閱 此<ulink type="help" url="ghelp:fdl">連結</ulink>，或是參閱與本手冊一同隨附的 COPYING-DOCS 檔案。</para>
         <para>本手冊是屬於依 GFDL 授權所發佈之 GNOME 手冊集中的一部份。 如果您只要單獨散佈本手冊，依據授權聲明第六節之敘述， 您必須另外將授權聲明加入本手冊中。</para>

	<para>許多公司為了突顯其產品與服務，會使用特別名稱，並亦已聲明這些 名稱為其商標。當這些名稱出現在 GNOME 文件中，同時 GNOME 文件 專案小組成員亦明白這些名稱為商標時， 這些名稱會以大寫字母或是首字母大寫表示。</para>

	<para>本文件及其修正版本的提供，是基於 GNU 自由文件授權聲明 的條款，同時亦有下列共識： <orderedlist>
		<listitem>
		  <para>文件提供是以其「原樣」呈現，不管明示或暗示，皆不具任何 保證，包括 (但不限於) 文件或修正版毫無錯誤、可販售、 具特殊用途，或不侵權。 關於本文件與修正版文件之品質、正確性及功用， 其風險您必須自行承擔。 若本文件或修正版有任何缺陷，任何必須之保養，修理及更正， 應由您自行承擔，原始作者、作者或任何散佈者無須負責。 本免責聲明是本授權聲明極重要與必要的一部份，因此任何文件或 修正版的授權，皆須在同意本免責聲明的情況下進行；同時</para>
		</listitem>
		<listitem>
		  <para>在任何情況或法律理論下，亦即不管是在侵權 (包括疏忽)、契約或 其他情形，或是已預先告知會有下列損害之可能時，本文件 或修正版的任何作者、原始作者、投稿人以及散佈者，或是 任何提供單位，對於因使用本文件及修正版，或與本文件及 修正版使用相關所造成的任何直接、間接、特殊、偶然或必 然之損害，包括 (但不限於) 信譽受損、工作停止、電腦當 機或不正常運作，或任何所有其他損害，上述人等皆不需負 任何責任。</para>
		</listitem>
	  </orderedlist></para>
  </legalnotice>


   <!-- This file  contains link to license for the documentation (GNU FDL), and 
        other legal stuff such as "NO WARRANTY" statement. Please do not change 
        any of this. -->

    <authorgroup> 
      <corpauthor> Sun Microsystems Inc.</corpauthor>

<!-- gdocteam@sun.com (Sun Java Desktop System Documentation Team) -->
      
<!-- This is appropriate place for other contributors: translators,
     maintainers,  etc. Commented out by default.
     
      <othercredit role="translator">
                <firstname>Latin</firstname> 
                <surname>Translator 1</surname> 
                <affiliation> 
                          <orgname>Latin Translation Team</orgname> 
                          <address> <email>translator@gnome.org</email> </address> 
                </affiliation>
                <contrib>Latin translation</contrib>
      </othercredit>
-->
    </authorgroup>

    <revhistory>
    <revision> 
                <revnumber>Calculator Manual V2.9</revnumber> 
                <date>March 2005</date> 
                <revdescription> 
                          <para role="author">Sun Java Desktop System Documentation Team
                          </para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>Calculator Manual V2.8</revnumber> 
                <date>August 2004</date> 
                <revdescription> 
                          <para role="author">Sun Java Desktop System Documentation Team
                          </para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>gcalctool Manual V2.7</revnumber> 
                <date>February 2004</date> 
                <revdescription> 
                          <para role="author">Sun GNOME 文件小組</para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>gcalctool Manual V2.6</revnumber> 
                <date>October 2003</date> 
                <revdescription> 
                          <para role="author">Sun GNOME 文件小組</para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>gcalctool 手冊 V2.5</revnumber> 
                <date>July 2003</date> 
                <revdescription> 
                          <para role="author">Sun GNOME 文件小組</para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>gcalctool 手冊 V2.4</revnumber> 
                <date>2003 年 6 月</date> 
                <revdescription> 
                          <para role="author">Sun GNOME 文件小組</para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>gcalctool 手冊 V2.3</revnumber> 
                <date>2003 年 4 月</date> 
                <revdescription> 
                          <para role="author">Sun GNOME 文件小組</para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>gcalctool 手冊 V2.2</revnumber> 
                <date>2003 年 4 月</date> 
                <revdescription> 
                          <para role="author">Sun GNOME 文件小組</para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>gcalctool 手冊 V2.1</revnumber> 
                <date>2003 年 3 月</date> 
                <revdescription> 
                          <para role="author">Sun GNOME 文件小組</para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
      <revision> 
                <revnumber>gcalctool 手冊 V2.0</revnumber> 
                <date>2003 年 3 月</date> 
                <revdescription> 
                          <para role="author">Sun GNOME 文件小組</para>
                          <para role="publisher">GNOME 文件專案</para>
                </revdescription> 
      </revision> 
    </revhistory> 

    <releaseinfo>This manual describes version 5.5.37 of Calculator.
    </releaseinfo> 
    <legalnotice> 
      <title>回饋</title> 
      <para>關於本 <application>Calculator</application> 應用程式或 手冊，如果要報告錯誤或提出建議，請遵照 <ulink url="ghelp:gnome-feedback" type="help">GNOME Feedback Page</ulink> 的指示。</para>
<!-- Translators may also add here feedback address for translations -->
    </legalnotice> 
  </articleinfo> 

  <indexterm zone="index"> 
    <primary>gcalctool</primary> 
  </indexterm> 
  <indexterm zone="index"> 
    <primary>計算機</primary> 
  </indexterm>

<!-- ============= Document Body ============================= -->
<!-- ============= Introduction ============================== -->
  <sect1 id="gcalctool-intro"> 
    <title>介紹</title> 
    <para>The <application>gcalctool</application> application provides the following modes for different types of mathematical functionality: </para>
     <variablelist>
        <varlistentry>
        <term><link linkend="gcalctool-basic-mode">基本</link></term>
        <listitem><para>The default mode. Provides standard calculator functions. You can perform standard addition, subtraction, division, and multiplication functions in Basic mode and you can use all of the Basic functions in each of the other modes.</para></listitem>
        </varlistentry>
  <varlistentry>
        <term><link linkend="gcalctool-advanced-mode">Advanced </link></term>
        <listitem><para>Provides advanced calculator functions. You can store numbers in 10 different memory registers, and easily retrieve and replace the numbers in the memory registers. You can use all of the Advanced functions in Financial, Scientific and Programming modes.</para></listitem>
        </varlistentry>
        <varlistentry>
        <term><link linkend="gcalctool-financial-mode">財務</link></term>
        <listitem><para>提供一些複雜的財務函數。</para></listitem>
        </varlistentry>
        <varlistentry>
        <term><link linkend="gcalctool-scientific-mode">科學</link></term>
        <listitem><para>Provides many additional mathematical functions, including trigonometric functions. You can also store your own functions and constants, when you use Scientific mode.</para></listitem>
        </varlistentry>
                <varlistentry>
                <term><link linkend="gcalctool-programming-mode">Programming </link></term>
                <listitem><para>Provides functions useful to a programmer, including bitwise functions and a bit editor.</para></listitem>
                </varlistentry>
     </variablelist>

    <para>您可以在下列的數值系統中使用 <application>Calculator</application>：</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>數值系統</para></entry>
              <entry colname="COLSPEC1" align="right">
                <para>基礎</para></entry>
            </row>
          </thead> 
          <tbody> 
            <row valign="top">
              <entry><para>二進制</para></entry>
              <entry align="right"><para>2</para></entry>
            </row>
            <row valign="top">
              <entry><para>八進制</para></entry>
              <entry align="right"><para>8</para></entry>
            </row>
            <row valign="top">
              <entry><para>十進制</para></entry>
              <entry align="right"><para>10</para></entry>
            </row>
            <row valign="top">
              <entry><para>十六進制</para></entry>
              <entry align="right"><para>16</para></entry>
            </row>
          </tbody> 
        </tgroup>
      </informaltable>
                           
  </sect1>

<!-- =========== Getting Started ============================== -->

  <sect1 id="gcalctool-get-start"> 
    <title>Getting Started</title> 
    <para>You can start <application>gcalctool</application> in the following ways:</para>
    <variablelist>
      <varlistentry>
        <term>Menu</term>
        <listitem>
          <para>
            Choose <menuchoice><guimenu>Accessories</guimenu><guimenuitem>Calculator</guimenuitem></menuchoice>.
          </para>
        </listitem>
      </varlistentry>
      <varlistentry>
        <term>Command line</term>
        <listitem>
          <para>
            Execute the following command: <userinput>gnome-calculator</userinput></para>
        </listitem>
      </varlistentry>
    </variablelist>
    <para>When you start <application>gcalctool</application>, the following window is displayed:</para>

    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-basic"> 
        <title><application>Calculator</application> 基本模式視窗</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_basic_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Basic mode window.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
                <para>The <application>gcalctool</application> window contains the following elements: </para>
                <variablelist>
                  <varlistentry> <term>功能表列</term>
                         <listitem>
                                <para>The menus on the menubar contain all of the commands that you need to work with <application>gcalctool</application>.</para>
                         </listitem>
                  </varlistentry>
                  <varlistentry> <term>顯示區域</term>
                         <listitem>
                                <para>The display area shows the numbers that you enter, and the results of calculations.</para>
                         </listitem>
                  </varlistentry>
                  <varlistentry> <term>模式區域</term>
                         <listitem>
                                <para>The mode area displays the buttons for the current mode. The Basic mode buttons are always displayed. Advanced mode buttons are also available in Financial, Scientific and Programming modes.  </para>
                         </listitem>
                  </varlistentry>
                  <varlistentry> <term>即現式功能表</term>
                         <listitem>
                <para><inlinemediaobject><imageobject><imagedata fileref="figures/gcalctool_menu_symbol.png" format="PNG"/></imageobject><textobject><phrase>顯示即現式功能表符號。</phrase></textobject></inlinemediaobject><application>Calculator</application> 按鈕上的符號表示按一下該按鈕後即會顯示即現式功能表。</para>
                         </listitem>
                  </varlistentry>
<varlistentry>
         <term>Status Bar</term>
                         <listitem>
                                <para>The status bar displays messages on the status of your calculations.  </para>
                         </listitem>
                  </varlistentry>
                </variablelist>
  </sect1>
<!-- ================ Usage ================================ -->
  <sect1 id="gcalctool-usage"> 
    <title>使用</title> 

    <!-- ================ Usage Subsection ================================ -->
    <sect2 id="gcalctool-calc-functions">
                <title>使用計算機函數</title> 
                <para>如果要執行計算，請使用下列任一種 方法：</para>
                <itemizedlist>
                  <listitem>
                         <para>按一下 <application>Calculator</application> 按鈕可以輸入數字和函數。</para>
                  </listitem>
                  <listitem>
                         <para>給予 <application>Calculator</application> 視窗焦點，然後使用鍵盤或數字鍵組來指定您要執行的計算。若需鍵盤捷徑的完整清單，請參閱 <xref linkend="gcalctool-keyboard-shortcut"/>。</para>
                  </listitem>
                </itemizedlist>
                <para><application>Calculator</application> 應用程式會自動以 40 位數以上和小型字 (如指數) 來顯示數字。例如，下列表格將顯示當使用十進制數值基礎且設定 2 位數的精準度時所顯示的值：</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>顯示</para></entry>
              <entry colname="COLSPEC1">
                <para>意義</para></entry>
            </row>
          </thead>
          <tbody>
            <row valign="top">
              <entry><para>1.23e+37</para></entry>
              <entry><para>1.23 * 10<superscript>37</superscript></para></entry>
            </row>
            <row valign="top">
              <entry><para>1e-5</para></entry>
              <entry><para>0.00001</para></entry>
            </row>
          </tbody>
        </tgroup>
      </informaltable>

      <para>若需如何輸入指數的詳細資訊，請參閱 <xref linkend="gcalctool-enter-exp"/>。</para>

    <sect3 id="gcalctool-calc-functions-separator">
                <title>To Display a Separator in Large Numbers</title> 
      <para>To insert a separator between every three digits to the left of the numeric point in decimal base, choose <menuchoice><guimenu>View</guimenu><guimenuitem>Show Thousands Separator</guimenuitem></menuchoice>. 
</para>
      <note>
      <para>Different countries and cultures have varying conventions for how to communicate. These conventions include the language spoken and the character used as a numeric separator.</para>
      <para><application>gcalctool</application> has been internationalized so users can adapt to their own conventions. This is done by setting a specific locale. We can't determine what locales will exist, except for a standard one called the C locale.</para>
      <para>When you use the C locale, the separator character is not displayed.</para>
      </note>
    </sect3>

    <sect3 id="gcalctool-calc-functions-copy">
                <title>To Copy and Paste in the Display Area</title> 
                <para>如果要複製計算的結果，請選擇 <menuchoice><guimenu>編輯</guimenu><guimenuitem>複製</guimenuitem></menuchoice>。 您可以將值貼入其他的應用程式。</para>

                <para>如果要將上一次複製的值貼入顯示區域，請選擇 <menuchoice><guimenu>編輯</guimenu><guimenuitem>貼上</guimenuitem></menuchoice>。</para>
    </sect3>

    </sect2> 
    <!-- ================ Usage Subsection ================================ -->
   
    <sect2 id="gcalctool-basic-mode"> 
      <title>執行基本計算</title> 
      <para>Basic mode is displayed by default when you first start <application>gcalctool</application>. To explicitly invoke Basic mode, choose <menuchoice><guimenu>View</guimenu><guimenuitem>Basic</guimenuitem></menuchoice>.  </para>
      <para>The calculator memory registers are unavailable in Basic Mode. In other words, <menuchoice><guimenu>View</guimenu><guimenuitem>Memory Registers</guimenuitem></menuchoice> is inactive.</para>
    <sect3 id="gcalctool-simple-calc"> 
      <title>執行簡單的計算</title> 
      <para>如果要執行簡單的計算，請使用 <xref linkend="gcalctool-TBL-simple-calc"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-simple-calc" frame="all">
                  <title>執行簡單的計算</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>數字</para> </entry>
                             <entry><para><guibutton>0</guibutton> 到 <guibutton>9</guibutton> 以內的數字</para></entry>
                             <entry><para>在十進制和十六進制基礎中，可以使用所有的數字。在八進制中，不可以使用 <guibutton>8</guibutton> 和 <guibutton>9</guibutton>。在二進制中，只能使用 <guibutton>0</guibutton> 和 <guibutton>1</guibutton>。預設基礎為十進制。</para></entry>
                             <entry><para><guibutton>1</guibutton></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>數字點</para> </entry>
                             <entry><para><guibutton>。</guibutton></para></entry>
                             <entry><para>開始輸入數字的分數部份。</para></entry>
                             <entry><para><guibutton>1</guibutton> <guibutton>。</guibutton> <guibutton>2</guibutton></para></entry>
                             <entry><para>1.2</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>計算結果</para> </entry>
                             <entry><para><guibutton>=</guibutton></para></entry>
                             <entry><para>顯示以目前基礎求得的計算結果。</para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>加</para> </entry>
                             <entry><para><guibutton>+</guibutton></para></entry>
                             <entry><para>將顯示區域的目前值加上下一個您輸入的數字。</para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>減</para> </entry>
                             <entry><para><guibutton>-</guibutton></para></entry>
                             <entry><para>將顯示區域的目前值減去下一個您輸入的數字。</para></entry>
                             <entry><para>3 <guibutton>-</guibutton> <guibutton>2</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>乘</para> </entry>
                             <entry><para><guibutton>*</guibutton></para></entry>
                             <entry><para>將顯示區域的目前值乘上下一個您輸入的數字。</para></entry>
                             <entry><para>3 <guibutton>*</guibutton> <guibutton>2</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>6</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>除</para> </entry>
                             <entry><para><guibutton>/</guibutton></para></entry>
                             <entry><para>將顯示區域的目前值除以下一個您輸入的數字。</para></entry>
                             <entry><para>6 <guibutton>/</guibutton> <guibutton>3</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>2</para></entry>
                           </row>
                        <row valign="top">
                             <entry><para>變更算術符號</para> </entry>
                             <entry><para><guibutton>+/-</guibutton></para></entry>
                             <entry><para>將正數變為負數，或將負數變為正數。</para></entry>
                             <entry><para>8 <guibutton>+/-</guibutton></para></entry>
                             <entry><para>-8</para></entry>
                           </row>
                         </tbody>

                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-erase-char"> 
      <title>消除字元</title> 
      <para>如果要消除字元，請使用 <xref linkend="gcalctool-TBL-erase-char"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-erase-char" frame="all">
                  <title>消除字元</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Backspace</para> </entry>
                             <entry><para><guibutton>Bksp</guibutton></para></entry>
                             <entry><para>移除顯示區域最右邊的字元。</para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton><guibutton>2</guibutton> <guibutton>Bksp</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>清除輸入</para> </entry>
                             <entry><para><guibutton>CE</guibutton></para></entry>
                             <entry><para>移除顯示區域的目前值。</para>
                                    <para>This operation is the same as <guibutton>Clr</guibutton></para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton><guibutton>2</guibutton> <guibutton>CE</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>0</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>清除</para> </entry>
                             <entry><para><guibutton>Clr</guibutton></para></entry>
                             <entry><para>Resets the current value in the display area to zero and removes any previous calculation results. <guibutton>Clr</guibutton> also deselects the <guilabel>Hyp</guilabel> and <guilabel>Inv</guilabel> options in Scientific.</para></entry>
                             <entry><para>1 <guibutton>+</guibutton> <guibutton>2</guibutton><guibutton>2</guibutton> <guibutton>Clr</guibutton></para></entry>
                             <entry><para>0</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    
    



  

          <sect3 id="gcalctool-ins-ascii"> 
            <title>顯示 ASCII 值</title> 
                        <para>如果要顯示字元的 ASCII 值，請選擇 <menuchoice><guimenu>編輯</guimenu><guimenuitem>插入 ASCII 值</guimenuitem></menuchoice>。</para>
                        <para>此時會顯示插入 ASCII 值對話方塊。</para>
                        <para>Enter the required character in the <guilabel>Character</guilabel> field, then click <guibutton>Insert</guibutton>. The ASCII value of that character, in the current numeric base, appears in the display area. For example, the ASCII value of B in decimal base is 66.</para>
          </sect3>
        </sect2>

 <sect2 id="gcalctool-advanced-mode">
    <title>To Perform Advanced Calculations  </title>
  <para>To change to Advanced mode, choose 
        <menuchoice> 
          <guimenu>View</guimenu> 
          <guimenuitem>Advanced</guimenuitem> 
        </menuchoice>. 
      </para>
    <para>When you change to Advanced mode, the following buttons are displayed to the right of the Basic mode buttons:</para>
    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-advanced"> 
        <title><application>gcalctool</application> Advanced Mode Buttons</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_advanced_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Advanced mode buttons.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
                <table id="gcalctool-TBL-adv-calc" frame="all">
                  <title>Performing Advanced Calculations</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>百分比</para> </entry>
                             <entry><para><guibutton>%</guibutton></para></entry>
                             <entry><para>Divides the current value by 100.</para></entry>
                             <entry><para>560 <guibutton>%</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>5.60</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>倒數</para> </entry>
                             <entry><para><guibutton>1/<replaceable>x</replaceable></guibutton></para></entry>
                             <entry><para>將顯示區域的目前值除1。</para></entry>
                             <entry><para>4 <guibutton>1/<replaceable>x</replaceable></guibutton></para></entry>
                             <entry><para>0.25</para></entry>
                           </row>
                    
                           <row valign="top">
                             <entry><para>平方根</para> </entry>
                             <entry><para><guibutton>Sqrt</guibutton></para></entry>
                             <entry><para>計算顯示區域之目前值的平方根。</para></entry>
                             <entry><para><guibutton>Sqrt</guibutton> 9 <guibutton>)</guibutton><guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>平方</para> </entry>
                             <entry><para><replaceable>x</replaceable><superscript>2</superscript></para></entry>
                             <entry><para>計算顯示區域之目前值的平方。</para></entry>
                             <entry><para>3 <replaceable>x</replaceable><superscript>2</superscript></para></entry>
                             <entry><para>9</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>整數部份</para> </entry>
                             <entry><para><guibutton>Int</guibutton></para></entry>
                             <entry><para>計算顯示區域之目前值的整數部份。</para></entry>
                             <entry><para>-23.45 <guibutton>Int</guibutton></para></entry>
                             <entry><para>-23</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>分數部份</para> </entry>
                             <entry><para><guibutton>Frac</guibutton></para></entry>
                             <entry><para>計算顯示區域之目前值的分數部份。</para></entry>
                             <entry><para>-23.45 <guibutton>Frac</guibutton></para></entry>
                             <entry><para>-0.45</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>絕對值</para> </entry>
                             <entry><para><guibutton>Abs</guibutton></para></entry>
                             <entry><para>計算顯示區域之目前值的絕對值。</para></entry>
                             <entry><para>-23.45 <guibutton>Abs</guibutton></para></entry>
                             <entry><para>23.45</para></entry>
                         </row>
                           <row valign="top">
                         <entry><para>括號</para> </entry>
                             <entry><para><guibutton>(</guibutton> and <guibutton>)</guibutton></para></entry>
                             <entry><para>Calculations within parentheses are performed first. You can nest parentheses to any level.</para></entry>
                           <entry>
                               <para>2 <guibutton>+</guibutton> <guibutton>3</guibutton> <guibutton>*</guibutton> <guibutton>4</guibutton> <guibutton>=</guibutton></para>
                               <para>2 <guibutton>+</guibutton> <guibutton>(</guibutton> <guibutton>3</guibutton> <guibutton>*</guibutton> <guibutton>4</guibutton> <guibutton>)</guibutton></para>
                             </entry>
                             <entry> <para>20</para>
                               <para>14</para>
                             </entry>
                               
                           </row>
                         </tbody>
                  </tgroup>
                </table>

<sect3 id="gcalctool-mem-reg"> 
      <title>使用計算機記憶體註冊</title> 
      <para>您可以將值儲存於 10 個 <application>Calculator</application> 記憶體註冊 <guilabel>R0</guilabel> 到 <guilabel>R9</guilabel> 中的任一個記憶體註冊。如果要顯示記憶體註冊，請選擇 <menuchoice><guimenu>檢視</guimenu><guimenuitem>記憶體註冊</guimenuitem></menuchoice>。</para>
      <para>The memory registers can be dismissed by either choosing 
            <menuchoice><guimenu>View</guimenu><guimenuitem>Memory Registers</guimenuitem></menuchoice> 
            again, or by clicking on the <guibutton>Close</guibutton> button in the memory register window.</para>
        <para><xref linkend="gcalctool-TBL-mem-reg"/> 將說明您可以使用的記憶體函數。</para>
                <table id="gcalctool-TBL-mem-reg" frame="all">
                  <title>記憶體函數</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>將值儲存於記憶體註冊</para> </entry>
                             <entry><para><guibutton>Sto</guibutton></para></entry>
                             <entry><para>Stores the current contents of the display area in the specified memory register. Click <guibutton>Sto</guibutton>, then select a memory register from the popup menu.</para>
                                   <para>如果要在 <application>Calculator</application> 階段作業期間清除記憶體註冊：</para>
                                     <orderedlist>
                                       <listitem><para>按一下 <guibutton>Clr</guibutton>。</para></listitem>
                                       <listitem><para>Click <guibutton>Sto</guibutton>.</para></listitem>
                                       <listitem><para>選取即現式功能表上的記憶體註冊。</para></listitem>
                                     </orderedlist>
</entry>
                             <entry><para>22 <guibutton>Sto</guibutton> <guilabel>R2</guilabel></para></entry>
                             <entry><para>The value 22 is stored in memory register <guilabel>R2</guilabel>.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>擷取記憶體註冊的值</para> </entry>
                             <entry><para><guibutton>Rcl</guibutton></para></entry>
                             <entry><para>Retrieves the contents of the specified memory register. Click <guibutton>Rcl</guibutton>, then select the memory register from the popup menu.</para></entry>
                             <entry><para>0 <guibutton>Rcl</guibutton> <guilabel>R2</guilabel></para></entry>
                             <entry><para>The value in the display area is 22.</para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para>將記憶體註冊值與顯示的值交換</para> </entry>
                             <entry><para><guibutton>Exch</guibutton></para></entry>
                             <entry><para>Exchanges the contents of the specified memory register and the current value in the display area. Click <guibutton>Exch</guibutton>, then select the memory register from the popup menu.</para></entry>
                             <entry><para>44 <guibutton>Exch</guibutton> <guilabel>R2</guilabel></para></entry>
                             <entry><para>The value in the display area changes from 44 to 22, the value in R2 changes from 22 to 44.</para> </entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
      <para>如果您是使用鍵盤捷徑，您可以使用鍵盤來指定記憶體註冊，如下列範例所示：</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>鍵盤輸入</para></entry>
              <entry colname="COLSPEC1">
                <para>說明</para></entry>
            </row>
          </thead>
          <tbody> 
            <row valign="top">
              <entry><para><keycap>S</keycap> <keycap>2</keycap></para></entry>
              <entry><para>將顯示區域的目前內容儲存於記憶體註冊 <guilabel>R2</guilabel>。</para></entry>
            </row>
            <row valign="top">
              <entry><para><keycap>R</keycap> <keycap>2</keycap></para></entry>
              <entry><para>擷取記憶體註冊 <guilabel>R2</guilabel> 的目前內容並放入顯示區域。</para></entry>
            </row>
            <row valign="top">
              <entry><para><keycap>X</keycap> <keycap>2</keycap></para></entry>
              <entry><para>將顯示區域的目前值與記憶體註冊 <guilabel>R2</guilabel> 的內容交換。</para></entry>
            </row>
          </tbody> 
        </tgroup>
      </informaltable>
    </sect3>


    </sect2> 
    <!-- ================ Usage Subsection ================================ -->
         <sect2 id="gcalctool-financial-mode"> 
      <title>執行財務計算</title> 
      <para>To change to Financial mode, choose 
        <menuchoice> 
          <guimenu>View</guimenu> 
          <guimenuitem>Financial</guimenuitem> 
        </menuchoice>. 
      </para>
     <para>When you change to Financial mode, the following buttons are displayed above the Basic and Advanced mode buttons:</para>

    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-financial"> 
        <title><application>Calculator</application> 財務模式按鈕</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_financial_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Financial mode buttons.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
      <para>如果要執行財務計算，請使用 <xref linkend="gcalctool-TBL-financial-calc"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-financial-calc" frame="all">
                  <title>執行財務計算</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>複利期間</para> </entry>
                             <entry><para><guibutton>Ctrm</guibutton></para></entry>
                             <entry><para>Calculates the number of compounding periods necessary to increase an investment from a present value to a future value, at a fixed interest rate per compounding period.</para>
                             </entry>
                             <entry><para>You have just deposited $8000 in an account that pays an annual interest rate of 9%, compounded monthly. Given the annual interest rate, you determine that the simple monthly interest rate is 0.09 / 12 = 0.0075. To calculate the time period necessary to double your investment, click <guibutton>Ctrm</guibutton>, and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>定期利率</term>
                                <listitem><para>0.0075</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>期約值</term>
                                <listitem><para>16000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>現值</term>
                                <listitem><para>8000</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>92.77</para>
                                    <para>投資金額倍增所需的時間為 92.77 個月。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>倍數餘額折舊</para> </entry>
                             <entry><para><guibutton>Ddb</guibutton></para></entry>
                             <entry><para>使用倍數餘額法計算資產在指定時間週期內的折舊額。</para>
                             </entry>
                             <entry><para>You have just purchased an office machine for $8000. The useful life of this machine is six years. The salvage value after six years is $900.
To calculate the depreciation expense for the fourth year, using the double-declining balance method, click <guibutton>Ddb</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Cost</term>
                                <listitem><para>8000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Salvage</term>
                                <listitem><para>900</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Life</term>
                                <listitem><para>6</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Period</term>
                                <listitem><para>4</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>790.12</para>
                                    <para>第 4 年的折舊額為 $790.12。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>期約值</para> </entry>
                             <entry><para><guibutton>Fv</guibutton></para></entry>
                             <entry><para>Calculates the future value of an investment based on a series of equal payments at a specific periodic interest rate, over the number of payment periods in the term.
</para>
                             </entry>
                             <entry><para>You plan to deposit $4000 in a bank account on the last day of each year for the next 20 years. The account pays 8% interest, compounded annually. Interest is paid on the last day of each year. 
To calculate the value of your account in 20 years, press <guibutton>Fv</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>分期付款</term>
                                <listitem><para>4000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>定期利率</term>
                                <listitem><para>0.08</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Number Of Periods</term>
                                <listitem><para>20</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>183047.86</para>
                                    <para>當 20 年到期後，帳戶的價值為 $183,047.86。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Gross Profit Margin</para></entry>
                             <entry><para><guibutton>Gpm</guibutton></para></entry>
                             <entry><para>Calculates the resale price of a product, based on the product cost and the wanted gross profit margin.</para></entry>
                             <entry><para>You sell T-Shirts online. Each T-Shirt cost you $12 in material and labor. You want to sell the T-Shirts with a Gross Profit Margin of 0.40 - for every five dollars you earn, you want two to be profit. To calculate the price you would have to sell your T-Shirts for, press <guibutton>Gpm</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Cost</term>
                                <listitem><para>12</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Margin</term>
                                <listitem><para>0.40</para></listitem>
                                </varlistentry>
                             </variablelist>
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>20</para>
                             <para>You will have to sell your T-Shirts for $20</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>分期付款</para> </entry>
                             <entry><para><guibutton>Pmt</guibutton></para></entry>
                             <entry><para>計算貸款每期付款的金額，其中付款日期為每一個付款週期的最後一天。</para>
                             </entry>
                             <entry><para>You are considering a $120,000 mortgage for 30 years at an annual interest rate of 11.0%. Given the annual interest rate, you determine that the simple monthly interest rate is 0.11 / 12 = 0.00917. The term is 30 * 12 = 360 months. To calculate the monthly repayment for this mortgage, press <guibutton>Pmt</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Principal</term>
                                <listitem><para>120000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>定期利率</term>
                                <listitem><para>0.00917</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>期間</term>
                                <listitem><para>360</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>1143.15</para>
                                    <para>每月償還的金額為 $1143.15。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>現值</para> </entry>
                             <entry><para><guibutton>Pv</guibutton></para></entry>
                             <entry><para>Calculates the present value of an investment based on a series of equal payments, discounted at a periodic interest rate, over the number of payment periods in the term.
</para>
                             </entry>
                             <entry><para>您剛嬴得了一佰萬元。獎金將分 20 年領取每年領取 $50,000。每年的最後一天領取獎金。如果您想接受每年領取 $50,000，即表示您的投資為年利率 9% 每年複利計算。</para>
                                    <para>However, you are given the option of receiving a single lump-sum payment of $400,000 instead of the million dollars annuity. 
To calculate which option is worth more in today's dollars, press <guibutton>Pv</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>分期付款</term>
                                <listitem><para>50000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>定期利率</term>
                                <listitem><para>0.09</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Number Of Periods</term>
                                <listitem><para>20</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>456427.28</para>
                                    <para>$1,000,000 分20 年領取相當於現值 $456,427.28。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>定期利率</para> </entry>
                             <entry><para><guibutton>利率</guibutton></para></entry>
                             <entry><para>Calculates the periodic interest necessary to increase an investment of a present value to a future value, over a number of compounding periods.
</para>
                             </entry>
                             <entry><para>You have invested $20,000 in a bond. The bond matures in five years, and has a maturity value of $30,000. Interest is compounded monthly. The term is 5 * 12 = 60 months.
To calculate the periodic interest rate for this investment, press <guibutton>Rate</guibutton> and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>期約值</term>
                                <listitem><para>30000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>現值</term>
                                <listitem><para>20000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>期間</term>
                                <listitem><para>60</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>.00678</para>
                                    <para>月利率為 0.678%。年利率為 0.678% * 12 = 8.14%。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>直線折舊</para> </entry>
                             <entry><para><guibutton>Sln</guibutton></para></entry>
                             <entry><para>計算資產在指定期間內的直線折舊額。折舊額為<replaceable>成本</replaceable> - <replaceable>剩餘價值</replaceable>。直線折舊法是將折舊額平均分攤於資產的使用年限。使用年限是資產的折舊期間，通常為年。</para>
                             </entry>
                             <entry><para>You have just purchased an office machine for $8000. The useful life of this machine is six years. The salvage value after six years is $900.
To calculate the yearly depreciation expense, using the straight-line method, prss <guibutton>Sln</guibutton>, and put the following values into the first three memory registers:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Cost</term>
                                <listitem><para>8000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Salvage</term>
                                <listitem><para>900</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Life</term>
                                <listitem><para>6</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>1183.33</para>
                                    <para>每年的折舊額為 $1183.33。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>年數合計折舊</para> </entry>
                             <entry><para><guibutton>Syd</guibutton></para></entry>
                             <entry><para>使用年數合計折舊法計算資產在指定時間週期內的折舊額。這種折舊法會加速折舊率，因此早期的折舊額會遠大於後期的折舊額。 折舊額為<replaceable>成本</replaceable> - <replaceable>剩餘價值</replaceable>。使用年限是資產的折舊期間，通常為年。</para>
                             </entry>
                             <entry><para>You have just purchased an office machine for $8000. The useful life of this machine is six years. The salvage value after six years is $900.
To calculate the depreciation expense for the fourth year, using the sum-of-the-years'-digits method, press <guibutton>Syd</guibutton>, and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>Cost</term>
                                <listitem><para>8000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Salvage</term>
                                <listitem><para>900</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Life</term>
                                <listitem><para>6</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>Period</term>
                                <listitem><para>4</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>1014.29</para>
                                    <para>第 4 年的折舊額為 $1014.29。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>付款週期</para> </entry>
                             <entry><para><guibutton>期間</guibutton></para></entry>
                             <entry><para>Calculates the number of payment periods that are necessary during the term of an ordinary annuity, to accumulate a future value, at a certain periodic interest rate.</para>
                             </entry>
                             <entry><para>You plan to deposit $1800 in a bank account on the last day of each year. The account pays 11% interest, compounded annually. Interest is paid on the last day of each year. 
To calculate the time period necessary to accumulate $120,000, press <guibutton>Term</guibutton>, and put the following values into the text entries:</para>
                             <variablelist>
                                <varlistentry>
                                <term>分期付款</term>
                                <listitem><para>1800</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>期約值</term>
                                <listitem><para>120000</para></listitem>
                                </varlistentry>
                                <varlistentry>
                                <term>定期利率</term>
                                <listitem><para>0.11</para></listitem>
                                </varlistentry>
                             </variablelist> 
                             <para>Click <guibutton>Calculate</guibutton></para></entry>
                             <entry><para>20.32</para>
                                    <para>帳戶會在 20.32 年內累積到 $120,000。</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect2> 
    <!-- ================ Usage Subsection ================================ -->
    <sect2 id="gcalctool-scientific-mode"> 
      <title>執行科學計算</title> 
      <para>To change to Scientific mode, choose 
        <menuchoice> 
          <guimenu>View</guimenu> 
          <guimenuitem>Scientific</guimenuitem> 
        </menuchoice>. 
      </para>
    <para>When you change to Scientific mode, the following buttons are displayed above the Basic and Advanced mode buttons:</para>

    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-scientific"> 
        <title><application>Calculator</application> 科學模式按鈕</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_scientific_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Scientific mode buttons.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
    <sect3 id="gcalctool-set-acc"> 
      <title>設定精確度</title> 
      <para>To set the accuracy of the display area and of the memory registers, click <guibutton>Acc</guibutton>, then select from the popup menu the accuracy level that you require. The current accuracy level is indicated by a preceding black circle in the popup menu. Up to 99 significant places can be displayed. The default accuracy is 9 significant places. </para>
<para>To set the accuracy level above 9, select <guilabel>Other (9) ...</guilabel>, then choose the accuracy level you require in the <guilabel>Set Precision</guilabel> popup.</para>
      <para>By default, trailing zeroes are not shown. To display trailing zeroes, click <guibutton>Acc</guibutton> then select <guilabel>Show Trailing Zeroes</guilabel> from the popup menu, or choose <menuchoice> <guimenu>View</guimenu> <guimenuitem>Show Trailing Zeroes</guimenuitem> </menuchoice>. A preceding check mark in the <guibutton>Acc</guibutton> popup menu or <guimenu>View</guimenu> menu indicates that the <guilabel>Show Trailing Zeroes</guilabel> option has been selected. To hide trailing zeroes, choose <menuchoice> <guimenu>View</guimenu> <guimenuitem>Show Trailing Zeroes</guimenuitem> </menuchoice> again.</para>
      <para>下列表格中的範例將說明精確度設定對顯示區域中 <replaceable>x</replaceable> 的影響 (使用十進制基礎並選取<guimenuitem>顯示尾隨的零</guimenuitem>選項來計算 <literal>1 / 8 = <replaceable>x</replaceable></literal>)：</para>
                <informaltable frame="all">
                  <tgroup cols="2" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>精確度</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>1 位數</para></entry>
                             <entry><para>1.2</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>2 位數</para></entry>
                             <entry><para>1.25</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>3 位數</para></entry>
                             <entry><para>1.250</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </informaltable>
    </sect3>
    <sect3 id="gcalctool-display-type"> 
      <title>設定顯示類型</title> 
      <para>如果要設定顯示類型，請選取 <xref linkend="gcalctool-TBL-display-type"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-display-type" frame="all">
                  <title>設定顯示類型</title> 
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>工程顯示類型</para> </entry>
                             <entry><para><guibutton>Eng</guibutton></para></entry>
                             <entry><para>Sets the display type to engineering format. Results are displayed in scientific notation. The exponent is always a multiple of three.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>定點顯示類型</para> </entry>
                             <entry><para><guibutton>Fix</guibutton></para></entry>
                             <entry><para>Sets the display type to fixed-point format. Results are not displayed in scientific notation. Fixed-point is the default display type.  If you change from scientific mode to either basic mode or financial mode, <application>gcalctool</application> automatically sets the display type to fixed-point format.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>科學顯示類型</para> </entry>
                             <entry><para><guibutton>Sci</guibutton></para></entry>
                             <entry><para>Sets the display type to scientific format. Results are displayed in scientific notation, with a fixed number of numeric digits.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-trig-type"> 
      <title>設定三角類型</title> 
      <para>如果要設定三角類型，請選取 <xref linkend="gcalctool-TBL-trig-type"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-trig-type" frame="all">
                  <title>設定三角類型</title> 
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>角度</para> </entry>
                             <entry><para><guibutton>角度</guibutton></para></entry>
                             <entry><para>Sets the trigonometric type to degrees. Degrees is the default trigonometric type.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Gradians</para> </entry>
                             <entry><para><guibutton>Gradians</guibutton></para></entry>
                             <entry><para>Sets the trigonometric type to gradians.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>弧度</para> </entry>
                             <entry><para><guibutton>弧度</guibutton></para></entry>
                             <entry><para>Sets the trigonometric type to radians.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-trig-options"> 
      <title>設定三角選項</title> 
      <para>如果要設定三角選項，請使用 <xref linkend="gcalctool-TBL-trig-options"/> 中所述的選項。</para>
                <table id="gcalctool-TBL-trig-options" frame="all">
                  <title>設定三角選項</title> 
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>雙曲線選項指示器</para> </entry>
                             <entry><para><guibutton>Hyp</guibutton></para></entry>
                             <entry><para>選取三角函數使用的雙曲線選項。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>反三角選項指示器</para> </entry>
                             <entry><para><guibutton>Inv</guibutton></para></entry>
                             <entry><para>選取三角函數使用的反三角選項。</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
      <para>依據預設，不會選取 <xref linkend="gcalctool-TBL-trig-options"/> 中所述的選項。按一下 <guibutton>Clr</guibutton> 可以取消選取這些選項。</para>

    </sect3>
    <sect3 id="gcalctool-trig-calc"> 
      <title>計算三角值</title> 
      <para>如果要計算三角值，請使用 <xref linkend="gcalctool-TBL-trig-calc"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-trig-calc" frame="all">
                  <title>計算三角值</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>餘弦 <literal>cos</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Cos</guibutton>、 <guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的餘弦。</para></entry>
                             <entry><para>60 <guibutton>Cos</guibutton></para></entry>
                             <entry><para>0.5</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>反餘弦 <literal>acos</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Cos</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的反餘弦。</para></entry>
                             <entry><para>0.5 <guilabel>Inv</guilabel> <guibutton>Cos</guibutton></para></entry>
                             <entry><para>60</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>雙曲餘弦 <literal>cosh</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Cos</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的雙曲餘弦。</para></entry>
                             <entry><para>0.4 <guilabel>Hyp</guilabel> <guibutton>Cos</guibutton></para></entry>
                             <entry><para>1.081072372</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>反雙曲餘弦 <literal>acosh</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Cos</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的反雙曲餘弦。</para></entry>
                             <entry><para>1.6 <guilabel>Hyp</guilabel> <guilabel>Inv</guilabel> <guibutton>Cos</guibutton></para></entry>
                             <entry><para>1.046967915</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>正弦 <literal>sin</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Sin</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的正弦。</para></entry>
                             <entry><para>90 <guibutton>Sin</guibutton></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>反正弦 <literal>asin</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Sin</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的反正弦。</para></entry>
                             <entry><para>1 <guilabel>Inv</guilabel> <guibutton>Sin</guibutton></para></entry>
                             <entry><para>90</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>雙曲正弦 <literal>sinh</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Sin</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的雙曲正弦。</para></entry>
                             <entry><para>0.4 <guilabel>Hyp</guilabel> <guibutton>Sin</guibutton></para></entry>
                             <entry><para>0.410752326</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>反雙曲正弦 <literal>asinh</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Sin</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的反雙曲正弦。</para></entry>
                             <entry><para>1.6 <guilabel>Hyp</guilabel> <guilabel>Inv</guilabel> <guibutton>Sin</guibutton></para></entry>
                             <entry><para>1.248983328</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>正切 <literal>tan</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Tan</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的正切。</para></entry>
                             <entry><para>45 <guibutton>Tan</guibutton></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>反正切 <literal>atan</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Tan</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的反正切。</para></entry>
                             <entry><para>1 <guilabel>Inv</guilabel> <guibutton>Tan</guibutton></para></entry>
                             <entry><para>45</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>雙曲正切 <literal>tanh</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Tan</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的雙曲正切。</para></entry>
                             <entry><para>0.6 <guilabel>Hyp</guilabel> <guibutton>Tan</guibutton></para></entry>
                             <entry><para>0.537049567</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>反雙曲正切 <literal>atanh</literal></para> </entry>
                             <entry><para>未選取 <guibutton>Tan</guibutton>、<guilabel>Hyp</guilabel> 選項，未選取 <guilabel>Inv</guilabel> 選項</para></entry>
                             <entry><para>計算顯示區域之目前值的反雙曲正切。</para></entry>
                             <entry><para>0.6 <guilabel>Hyp</guilabel> <guilabel>Inv</guilabel> <guibutton>Tan</guibutton></para></entry>
                             <entry><para>0.693147181</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-logs-calc"> 
      <title>計算對數</title> 
      <para>如果要計算對數，請使用 <xref linkend="gcalctool-TBL-logs-calc"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-logs-calc" frame="all">
                  <title>計算對數</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>常用對數基礎 10</para> </entry>
                             <entry><para>Log<subscript><replaceable>10</replaceable></subscript></para></entry>
                             <entry><para>Calculates the common logarithm (base 10) of the current value in the display area.</para></entry>
                             <entry><para>10 Log<subscript><replaceable>10</replaceable></subscript></para></entry>
                             <entry><para>1</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>自然對數</para> </entry>
                             <entry><para><guibutton>Ln</guibutton></para></entry>
                             <entry><para>計算顯示區域之目前值的自然對數。</para></entry>
                             <entry><para>10 <guibutton>Ln</guibutton></para></entry>
                             <entry><para>2.30</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Common Logarithm Base 2</para> </entry>
                             <entry><para>Log<subscript><replaceable>2</replaceable></subscript></para></entry>
                             <entry><para>Calculates the common logarithm (base 2) of the current value in the display area.</para></entry>
                             <entry><para>10 Log<subscript><replaceable>2</replaceable></subscript></para></entry>
                             <entry><para>3.32</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
                <note>
                  <para>這一版的 <application>Calculator</application> 不支援常用對數和自然對數。</para>
                </note>
    </sect3>
    <sect3 id="gcalctool-enter-exp"> 
      <title>輸入指數</title> 
      <para>如果要輸入指數字，請使用 <guibutton>Exp</guibutton> 按鈕。</para>
      <para>The <guibutton>Exp</guibutton> button enables you to enter numbers in scientific notation, that is, <replaceable>mantissa</replaceable> * <replaceable>base</replaceable><superscript><replaceable>exponent</replaceable></superscript>:
</para>
<variablelist>
  <varlistentry>
    <term><replaceable>mantissa</replaceable></term>
    <listitem><para>Current non-zero value in the display area. If the current value in the display area is zero, the mantissa is 1.0. </para></listitem>
  </varlistentry>
  <varlistentry>
    <term><replaceable>base</replaceable></term>
    <listitem><para>2, 8, 10, or 16 for binary, octal, decimal, and hexadecimal numeric base respectively.  </para></listitem>
  </varlistentry>
  <varlistentry>
    <term><replaceable>exponent</replaceable></term>
    <listitem><para>Next number that you enter.
</para></listitem>
  </varlistentry>
</variablelist>

<para>When you click <guibutton>Exp</guibutton>, the calculator displays <literal>. +</literal> to represent 
<replaceable>base</replaceable> to the power of the next number that you enter. </para>
<para>To change the sign of the number, use the <guibutton>+/-</guibutton> button before the <guibutton>Exp</guibutton> button.
To change the sign of the exponent (the power to which the number is raised) use <guibutton>-</guibutton> after the
<guibutton>Exp</guibutton> button.</para>

<para>To enter a decimal number in exponential format, use the guidelines in the following table: </para>
          <informaltable frame="all">
            <tgroup cols="3" colsep="1" rowsep="1">
                   <colspec colname="COLSPEC0" colwidth="50*"/>
                   <colspec colname="COLSPEC1" colwidth="50*"/>
                   <thead>
                          <row valign="top">
                            <entry colname="COLSPEC0">
                                   <para>數字</para></entry>
                            <entry colname="COLSPEC1">
                                   <para>輸入</para></entry>
                            <entry colname="COLSPEC2">
                                   <para>顯示的數字</para></entry>
                          </row>
                   </thead> 
                   <tbody> 
                     <row valign="top">
                       <entry><para>1200000000</para></entry>
                       <entry><para>12 <guibutton>Exp</guibutton> <guibutton>+</guibutton> <guibutton>8</guibutton> <guibutton>=</guibutton></para></entry>
                       <entry><para>1200000000</para></entry>
                     </row>
                     <row valign="top">
                       <entry><para>-1200000000</para></entry>
                       <entry><para><guibutton>-</guibutton> 12 <guibutton>Exp</guibutton> <guibutton>+</guibutton> <guibutton>8</guibutton> <guibutton>=</guibutton> </para></entry>
                       <entry><para>-1200000000</para></entry>
                     </row>
                     <row valign="top">
                       <entry><para>0.00000012</para></entry>
                       <entry><para>12 <guibutton>Exp</guibutton> <guibutton>-</guibutton> <guibutton>8</guibutton> <guibutton>=</guibutton> </para></entry>
                       <entry><para>1.2e-7</para></entry>
                     </row>
                     <row valign="top">
                       <entry><para>-0.00000012</para></entry>
                       <entry><para><guibutton>-</guibutton> 12 <guibutton>Exp</guibutton> <guibutton>-</guibutton> <guibutton>8</guibutton> <guibutton>=</guibutton> </para></entry>
                       <entry><para>-1.2e-7</para></entry>
                     </row>
                   </tbody>
            </tgroup>
          </informaltable>

    </sect3>
    <sect3 id="gcalctool-edit-const"> 
      <title>使用定值</title> 
      <para>Click <guibutton>Con</guibutton> to display the list of defined constant values. All constant values are specified in decimal numeric base, even if the current numeric base is not decimal.</para>
      <para>請從功能表上選取一個常數，將它的值輸入顯示區域。如果您是使用鍵盤捷徑 <keycap>#</keycap>，您可以使用鍵盤來指定常數，如下列範例所示：</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>鍵盤輸入</para></entry>
              <entry colname="COLSPEC1">
                <para>常數</para></entry>
            </row>
          </thead>
          <tbody>
            <row valign="top">
              <entry><para><keycap>#</keycap> <keycap>3</keycap> </para></entry>
              <entry><para>C3</para></entry>
            </row>
          </tbody>
        </tgroup>
      </informaltable>
      <para><application>Calculator</application> 應用程式提供 10 個預設定值，如下列表格所示：</para>
                <informaltable frame="all">
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1" colwidth="50*"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>數字</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>值</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>C0</para></entry>
                             <entry><para>0.621</para></entry>
                             <entry><para>Kilometer-to-mile conversion factor</para>
                                    <para>將顯示區域的目前值乘上這個常數，將每小時公里數轉換為每小時英里數。例如，8 * <guibutton>Con</guibutton><guilabel>C0</guilabel><keycap>=</keycap> 5。</para>
                                    <para>將顯示區域的目前值除這個常數，將每小時英里數轉換為每小時公里數。例如，5 / <guibutton>Con</guibutton><guilabel>C0</guilabel><keycap>=</keycap> 8。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C1</para></entry>
                             <entry><para>1.414213562</para></entry>
                             <entry><para>Square root of 2</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C2</para></entry>
                             <entry><para>2.718281828</para></entry>
                             <entry><para>e</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C3</para></entry>
                             <entry><para>3.141592653</para></entry>
                             <entry><para>pi</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C4</para></entry>
                             <entry><para>0.3937007</para></entry>
                             <entry><para>Centimeter-to-inch conversion factor</para>
                                    <para>將顯示區域的目前值乘上這個常數，將公分轉換為英吋。例如，30 * <guibutton>Con</guibutton><guilabel>C4</guilabel><keycap>=</keycap> 12。</para>
                                    <para>將顯示區域的目前值除這個常數，將英吋轉換為公分。例如，12 / <guibutton>Con</guibutton><guilabel>C4</guilabel><keycap>=</keycap> 30。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C5</para></entry>
                             <entry><para>57.295779513</para></entry>
                             <entry><para>Degrees in a radian</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C6</para></entry>
                             <entry><para>1048576</para></entry>
                             <entry><para>2 ^ 20</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C7</para></entry>
                             <entry><para>0.0353</para></entry>
                             <entry><para>Gram-to-ounce conversion factor</para>
                                    <para>將顯示區域的目前值乘上這個常數，將克轉換為盎司。例如，500 * <guibutton>Con</guibutton><guilabel>C7</guilabel><keycap>=</keycap> 18。</para>
                                    <para>將顯示區域的目前值除這個常數，將盎司轉換為克。例如，18 / <guibutton>Con</guibutton><guilabel>C7</guilabel><keycap>=</keycap> 500。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C8</para></entry>
                             <entry><para>0.948</para></entry>
                             <entry><para>Kilojoule-to-British-thermal-unit conversion factor</para>
                                    <para>將顯示區域的目前值乘上這個常數，將千焦耳轉換為英國熱量單位。例如，10 * <guibutton>Con</guibutton><guilabel>C8</guilabel><keycap>=</keycap> 9.48。</para>
                                    <para>將顯示區域的目前值除這個常數，將英國熱量單位轉換為千焦耳。例如，9.48 / <guibutton>Con</guibutton><guilabel>C8</guilabel><keycap>=</keycap> 10。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>C9</para></entry>
                             <entry><para>0.061</para></entry>
                             <entry><para>Cubic-centimeter-to-cubic-inch conversion factor</para>
                                    <para>將顯示區域的目前值乘上這個常數，將立方厘米轉換為立方英吋。例如，100 * <guibutton>Con</guibutton><guilabel>C9</guilabel><keycap>=</keycap> 6.10。</para>
                                    <para>將顯示區域的目前值除這個常數，將立方厘米轉換為立方英吋。例如，6.10 / <guibutton>Con</guibutton><guilabel>C9</guilabel><keycap>=</keycap> 100。</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </informaltable>
      <para>You can overwrite the default constants to store your own constants.</para>
      <para>如果要儲存新常數或編輯現有的常數，請執行下列的步驟：</para>
      <orderedlist>
        <listitem>
           <para>Click <guibutton>Con</guibutton>, then select <guilabel>Edit Constants</guilabel> from the popup menu. </para>
        </listitem>
        <listitem>
      <para>In the <guilabel>Edit Constants</guilabel> dialog, select the constant that you want to overwrite or edit.</para>
        </listitem>
        <listitem>
      <para>Click on the Value field, then enter the new value.</para>
        </listitem>
        <listitem>
      <para>Click on the Description field, then enter the new description.</para>
        </listitem>
        <listitem>
      <para>Click <guibutton>OK</guibutton> to save your changes and close the <guilabel>Edit Constants</guilabel> dialog.</para>
        </listitem>
      </orderedlist>
    </sect3>
    <sect3 id="gcalctool-edit-func"> 
      <title>使用函數</title> 
      <para>To show the available functions, click <guibutton>Fun</guibutton>. A popup menu displays the list of defined functions. Select a function from the menu to run that function.</para>
<para>如果您是使用鍵盤捷徑 <keycap>F</keycap>，您可以使用鍵盤來指定函數，如下列範例所示：</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>鍵盤輸入</para></entry>
              <entry colname="COLSPEC1">
                <para>功能</para></entry>
            </row>
          </thead>
          <tbody>
            <row valign="top">
              <entry><para><keycap>F</keycap> <keycap>3</keycap> </para></entry>
              <entry><para>F3</para></entry>
            </row>
          </tbody>
        </tgroup>
      </informaltable>

      <para><application>Calculator</application> 應用程式不提供任何預設函數。您最多可以儲存 10 個函數。</para>
      <para>如果要儲存新的函數或編輯現有的函數，請執行下列的步驟：</para>
      <orderedlist>
        <listitem>
           <para>Click <guibutton>Fun</guibutton>, then select <guilabel>Edit Functions</guilabel> from the popup menu.</para>
        </listitem>
        <listitem>
      <para>In the <guilabel>Edit Functions</guilabel> dialog, select a blank entry, or the function that you want to overwrite.</para>
        </listitem>
        <listitem>
      <para>Click on the Value field, then enter the new equation to solve. You can use "ans" for the result of the previous equation and "R5" for register 5 etc. For example, enter <literal>(-R1+sqrt(R1^2-4*R0*R2))/(2*R0)</literal> to calculate a root of the quadratic equation R0*x^2 + R1*x + R2 = 0.</para>
        </listitem>
        <listitem>
      <para>Click on the Description field, then enter the new description. For example, <literal>Quadratic Solver</literal>.</para>
        </listitem>
        <listitem>
      <para>Click <guibutton>OK</guibutton> to save your changes and close the <guilabel>Edit Functions</guilabel> dialog.</para>
        </listitem>
      </orderedlist>
    </sect3>
    <sect3 id="gcalctool-misc-calc"> 
      <title>執行其他的科學計算</title> 
      <para>To perform miscellaneous scientific calculations, use the buttons described in <xref linkend="gcalctool-TBL-misc-calc"/>. </para>
                <table id="gcalctool-TBL-misc-calc" frame="all">
                  <title>執行其他的科學計算</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                                                      <row valign="top">
                             <entry><para>e to the <replaceable>x</replaceable> power</para> </entry>
                             <entry><para>e<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>計算顯示區域之目前值其 <literal>e</literal> 的次方值。</para></entry>
                             <entry><para>2 e<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>7.39</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>10 to the <replaceable>x</replaceable> power</para> </entry>
                             <entry><para>10<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>計算顯示區域之目前值其 10 的次方值。</para></entry>
                             <entry><para>2 10<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>100</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>2 to the <replaceable>x</replaceable> power</para> </entry>
                             <entry><para>2<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>Calculates the value of 2 raised to the power of the current value in the display area.</para></entry>
                             <entry><para>2 2<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>4</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>x to the <replaceable>y</replaceable> power</para> </entry>
                             <entry><para><replaceable>x</replaceable><superscript><replaceable>y</replaceable></superscript></para></entry>
                             <entry><para>將顯示區域的目前值作為您輸入之下一個值的次方。</para></entry>
                             <entry><para>2 <replaceable>x</replaceable><superscript><replaceable>y</replaceable></superscript> <guibutton>4</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>16</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>x to the reciprocal <replaceable>y</replaceable> power</para> </entry>
                             <entry><para><replaceable>x</replaceable><superscript>1/<replaceable>y</replaceable></superscript></para></entry>
                             <entry><para>Raises the current value in the display area to the reciprocal power of the next value that you enter.</para></entry>
                             <entry><para>2 <replaceable>x</replaceable><superscript>1/<replaceable>y</replaceable></superscript> <guibutton>4</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>16</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><replaceable>x</replaceable> 階乘</para> </entry>
                             <entry><para><guibutton><replaceable>x</replaceable>!</guibutton></para></entry>
                             <entry><para>計算顯示區域之目前值的階乘。<replaceable>x</replaceable> 階乘為 <replaceable>x</replaceable>*(<replaceable>x</replaceable>-1)*(<replaceable>x</replaceable>-2)...*1。這個函數只可套用於正整數。</para></entry>
                             <entry><para>4 <guibutton><replaceable>x</replaceable>!</guibutton></para></entry>
                             <entry><para>24</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Modulus Division</para> </entry>
                             <entry><para><guibutton>Mod</guibutton></para></entry>
                             <entry><para>Divides the current integer value in the display area by the next integer number that you enter, displaying the remainder.</para></entry>
                             <entry><para>15 <guibutton>Mod</guibutton> <guibutton>4</guibutton> <guibutton>=</guibutton></para></entry>
                             <entry><para>3</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>亂數產生器</para> </entry>
                             <entry><para><guibutton>Rand</guibutton></para></entry>
                             <entry><para>Generates a random number in the range 0.0 to 1.0 then displays the random number in the display area.</para></entry>
                             <entry><para><guibutton>Rand</guibutton></para></entry>
                             <entry><para>0.14</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    </sect2> 
    <sect2 id="gcalctool-programming-mode">
      <title>To Perform Programming Calculations</title>
      <para>To change to Programming mode, choose 
        <menuchoice> 
          <guimenu>View</guimenu> 
          <guimenuitem>Programming</guimenuitem> 
        </menuchoice>. 
      </para>
    <para>When you change to Programming mode, the following widget is displayed above the Base and Advanced mode buttons:</para>

    <!-- ==== Figure ==== -->
      <figure id="gcalctool-FIG-programming"> 
        <title><application>gcalctool</application> Programming Mode Buttons</title> 
        <screenshot> 
          <mediaobject> 
            <imageobject><imagedata fileref="figures/gcalctool_programming_window.png" format="PNG"/> 
            </imageobject>
            <textobject> 
              <phrase>Shows <application>gcalctool</application> Programming mode buttons.  </phrase> 
            </textobject> 
          </mediaobject> 
        </screenshot> 
      </figure>
    <!-- ==== End of Figure ==== -->
    <sect3 id="gcalctool-num-base"> 
      <title>設定數值基礎</title> 
      <para>如果要設定數值基礎，請選取 <xref linkend="gcalctool-TBL-num-base"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-num-base" frame="all">
                  <title>設定數值基礎</title> 
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>二進制基礎</para> </entry>
                             <entry><para><guibutton>Bin</guibutton></para></entry>
                             <entry><para>將數值基礎設為二進制，即基底為 2。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>八進制基礎</para> </entry>
                             <entry><para><guibutton>Oct</guibutton></para></entry>
                             <entry><para>將數值基礎設為八進制，即基底為 8。</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>十進制基礎</para> </entry>
                             <entry><para><guibutton>Dec</guibutton></para></entry>
                             <entry><para>Sets the numeric base to decimal, that is, base 10. Decimal is the default numeric base. If you change from Programming mode to another mode, <application>gcalctool</application> automatically sets the numeric base to decimal.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>十六進制基礎</para> </entry>
                             <entry><para><guibutton>Hex</guibutton></para></entry>
                             <entry><para>將數值基礎設為十六進制，即基底為 16。</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-word-length">
      <title>To Set the Word Length</title>
      <para>The word length can be altered, to make the bitwise functions behave differently. To set the word length, select one of the buttons described in <xref linkend="gcalctool-TBL-word-length"/>. </para>
                <table id="gcalctool-TBL-word-length" frame="all">
                  <title>Setting the Word Length</title>
                  <tgroup cols="3" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>64 bit word</para> </entry>
                             <entry><para><guibutton>64 bit</guibutton></para></entry>
                             <entry><para>Sets the word length to 64 bits. 64 bits is the default word length.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>32 bit word</para> </entry>
                             <entry><para><guibutton>32 bit</guibutton></para></entry>
                             <entry><para>Sets the word length to 32 bits.</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>16 bit word</para> </entry>
                             <entry><para><guibutton>16 bit</guibutton></para></entry>
                             <entry><para>Sets the word length to 16 bits.</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-calc-bit-manipulation-ext">
      <title>To Perform Bit Manipulations on Integers</title>
      <para>If the calculator display shows an integer value, then each of the bits in that integer value is displayed as a collection of 0s and 1s in the Bit Editor. By clicking on any of these individual bits, their value can be toggled, causing the displayed integer value to be adjusted accordingly.</para>
    </sect3>
    <sect3 id="gcalctool-logic-calc"> 
      <title>To Perform Bitwise Calculations</title> 
      <para>To perform bitwise calculations, use the buttons described in <xref linkend="gcalctool-TBL-logic-calc"/>. </para>
                <table id="gcalctool-TBL-logic-calc" frame="all">
                  <title>Performing Bitwise Calculations</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>Bitwise OR</para> </entry>
                             <entry><para><guibutton>OR</guibutton></para></entry>
                             <entry><para>Performs a bitwise OR operation on the current value in the display area and the next number that you enter.</para></entry>
                             <entry><para>10001000 <guibutton>OR</guibutton> 00010001</para></entry>
                             <entry><para>10011001</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Bitwise AND</para> </entry>
                             <entry><para><guibutton>AND</guibutton></para></entry>
                             <entry><para>Performs a bitwise AND operation on the current value in the display area and the next number that you enter.</para></entry>
                             <entry><para>10101010 <guibutton>AND</guibutton> 00110011</para></entry>
                             <entry><para>100010</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Bitwise NOT</para> </entry>
                             <entry><para><guibutton>NOT</guibutton></para></entry>
                             <entry><para>Performs a bitwise NOT operation on the current value in the display area, using the word size configured in <xref linkend="gcalctool-word-length"/>.</para></entry>
                             <entry><para><guibutton>NOT</guibutton> 1357ACE</para></entry>
                             <entry><para>FECA8531</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Bitwise XOR</para> </entry>
                             <entry><para><guibutton>XOR</guibutton></para></entry>
                             <entry><para>Performs a bitwise XOR operation on the current value in the display area and the next number that you enter.</para></entry>
                             <entry><para>1100 <guibutton>XOR</guibutton> 1010</para></entry>
                             <entry><para>110</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Bitwise XNOR</para> </entry>
                             <entry><para><guibutton>XNOR</guibutton></para></entry>
                             <entry><para>Performs a bitwise XNOR operation on the current value in the display area and the next number that you enter.</para></entry>
                             <entry><para>1100 <guibutton>XNOR</guibutton> 1010</para></entry>
                             <entry><para>1001</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
    </sect3>
    <sect3 id="gcalctool-num-manip"> 
      <title>處理二進制數字</title> 
      <para>如果要處理二進制數字，請使用 <xref linkend="gcalctool-TBL-num-manip"/> 中所述的按鈕。</para>
                <table id="gcalctool-TBL-num-manip" frame="all">
                  <title>處理二進制數字</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>左移 <replaceable>n</replaceable></para> </entry>
                             <entry><para><guibutton>&lt;</guibutton></para></entry>
                             <entry><para>Shifts the current value in the display area, the specified number of places to the left. Click <guibutton>&lt;</guibutton>, then select the number of shift places from the popup menu. The number can be shifted up to 15 places left. </para></entry>
                             <entry><para>111 <guibutton>&lt;</guibutton><guilabel>1 位數</guilabel></para></entry>
                             <entry><para>1110</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>右移 <replaceable>n</replaceable></para> </entry>
                             <entry><para><guibutton>&gt;</guibutton></para></entry>
                             <entry><para>Shifts the current value in the display area, the specified number of places to the right. Click <guibutton>&gt;</guibutton>, then select the number of shift places from the popup menu. The number can be shifted up to 15 places right.</para></entry>
                             <entry><para>1011 <guibutton>&gt;</guibutton><guilabel>1 位數</guilabel></para></entry>
                             <entry><para>101 </para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Truncating a number</para> </entry>
                             <entry><para><guibutton>Trunc</guibutton></para></entry>
                             <entry><para>Truncates the current value in the display area to the word size configured in <xref linkend="gcalctool-word-length"/>.</para></entry>
                             <entry><para>FFFFFFFFFF <guibutton>Trunc</guibutton></para></entry>
                             <entry><para>FFFFFFFF</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Get the 1's complement</para> </entry>
                             <entry><para><guibutton>1's</guibutton></para></entry>
                             <entry><para>Calculates the 1's complement for the current value in the display area, using the word size configured in <xref linkend="gcalctool-word-length"/>.</para></entry>
                             <entry><para>D723 <guibutton>1's</guibutton></para></entry>
                             <entry><para>FFFF28DC</para></entry>
                           </row>
                           <row valign="top">
                             <entry><para>Get the 2's complement</para> </entry>
                             <entry><para><guibutton>2's</guibutton></para></entry>
                             <entry><para>Calculates the 2's complement for the current value in the display area, using the word size configured in <xref linkend="gcalctool-word-length"/>.</para></entry>
                             <entry><para>D723 <guibutton>2's</guibutton></para></entry>
                             <entry><para>FFFF28DD</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
      <para>如果您是使用鍵盤捷徑，您可以使用鍵盤來指定要移動的位數，如下列範例所示：</para>
      <informaltable frame="all">
        <tgroup cols="2" colsep="1" rowsep="1">
          <colspec colname="COLSPEC0" colwidth="50*"/>
          <colspec colname="COLSPEC1" colwidth="50*"/>
          <thead>
            <row valign="top">
              <entry colname="COLSPEC0">
                <para>鍵盤輸入</para></entry>
              <entry colname="COLSPEC1">
                <para>說明</para></entry>
            </row>
          </thead>
          <tbody>
            <row valign="top">
              <entry><para><keycap>&lt;</keycap> <keycap>4</keycap></para></entry>
              <entry><para>將顯示區域中目前的二進制值左移 4 位數。</para></entry>
            </row>
            <row valign="top">
              <entry><para><keycap>&gt;</keycap> <keycap>4</keycap></para></entry>
              <entry><para>將顯示區域中目前的二進制值右移 4 位數。</para></entry>
            </row>
          </tbody> 
        </tgroup>
      </informaltable>

    </sect3>
        <sect3 id="gcalctool-misc-prog">
      <title>To Perform Miscellaneous Programming Calculations</title> 
      <para>To perform miscellaneous programming calculations, use the buttons described in <xref linkend="gcalctool-TBL-misc-prog"/>. </para>
                <table id="gcalctool-TBL-misc-prog" frame="all">
                  <title>Performing Miscellaneous Programming Calculations</title> 
                  <tgroup cols="5" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <colspec colname="COLSPEC4" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>說明</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>範例</para></entry>
                                  <entry colname="COLSPEC4">
                                         <para>結果</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para>十六進制數字</para> </entry>
                             <entry><para><guibutton>A</guibutton> to <guibutton>F</guibutton> inclusive</para></entry>
                             <entry><para>這些數字只可用於十六進制基礎。</para></entry>
                             <entry><para><guibutton>B</guibutton></para></entry>
                             <entry><para>B</para></entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
         </sect3>
    </sect2>
<!-- ============= Undo and Redo ======================== -->
  <sect2 id="gcalctool-undo-redo">
    <title>To Undo and Redo</title>
                <para>To undo your previous action, choose
                  <menuchoice>
                         <guimenu>Edit</guimenu>
                         <guimenuitem>Undo</guimenuitem>
                  </menuchoice>.  You can undo up to 15 past actions.</para>
                <para>If you want to redo an action you have just undone, choose
                  <menuchoice>
                         <guimenu>Edit</guimenu>
                         <guimenuitem>Redo</guimenuitem>
                  </menuchoice>. You can redo up to 15 undone actions.</para>
  </sect2>
<!-- ============= Quitting ============================= -->
  <sect2 id="gcalctool-quit"> 
    <title>結束</title> 
                <para>如果要結束 <application>Calculator</application>，請選擇 <menuchoice><guimenu>計算機</guimenu><guimenuitem>結束</guimenuitem></menuchoice>。</para>
                <para>當您結束 <application>Calculator</application> 時，即會儲存下列設定目前的值並在下次啟動 <application>Calculator</application> 時自動套用：</para>
                  <itemizedlist>
                    <listitem><para>Mode: <link linkend="gcalctool-basic-mode">Basic</link>,  <link linkend="gcalctool-advanced-mode">Advanced</link>, <link linkend="gcalctool-financial-mode">Financial</link>, or <link linkend="gcalctool-scientific-mode">Scientific</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-set-acc">精確度</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-mem-reg">Memory Registers window</link> displayed or not displayed, plus the contents of each memory register</para></listitem>
                    <listitem><para><link linkend="gcalctool-num-base">數值基礎</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-display-type">顯示類型</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-trig-type">三角類型</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-set-acc">顯示尾隨的零</link></para></listitem>
                    <listitem><para><link linkend="gcalctool-calc-functions-separator">Show Thousands Separator</link></para></listitem>
                  </itemizedlist>
  </sect2>
  </sect1>
<!-- ============= Technical Information ============================= -->
  <sect1 id="gcalctool-tech-info">
         <title>技術資訊</title>

         <sect2 id="gcalctool-recognize-error">
                <title>錯誤狀況</title>
                <para>如果您執行一個無效的計算，<application>Calculator</application> 會指出下列的錯誤狀況： <itemizedlist>
<listitem><para>在顯示區域中顯示 <literal>Error</literal> 一字。</para></listitem>
<listitem><para>Displays an error message in the status bar.</para></listitem>
<listitem><para>使所有的計算機按鈕無法使用，<guibutton>Clr</guibutton> 除外。</para></listitem>
<listitem><para>使所有的計算機選項無法使用。</para></listitem>
<listitem><para>使所有的計算機功能表項目無法使用，<menuchoice><guimenu>計算機</guimenu><guimenuitem>結束</guimenuitem></menuchoice>和<menuchoice><guimenu>說明</guimenu><guimenuitem>內容</guimenuitem></menuchoice> 除外。</para></listitem>
</itemizedlist></para>
<para>To clear the error condition, click <guibutton>Clr</guibutton> or press <keycombo><keycap>Shift</keycap><keycap>Delete</keycap></keycombo>.</para>
         </sect2>

         <sect2 id="gcalctool-change-modes">
                <title>Changing Modes</title>
                <para>If the user tries to change modes when a partial
calculation is being displayed, a warning dialog is displayed, telling
the user that the current calculation will be cleared, and the base will 
be reset to decimal.</para>
                <para>There is a checkbox present, that if checked, prevents the dialog from being shown again.</para>
                <para>If the user presses the <guibutton>Cancel</guibutton> button, the change mode operation is cancelled. If the user presses the <guibutton>Change Mode</guibutton> button, the mode is changed and has the following side-effects:
<itemizedlist>
<listitem><para>Clears the display.</para></listitem>
   <listitem><para>Sets the base to decimal.</para></listitem>
   <listitem><para>Sets the numeric display to fixed.</para></listitem>
   <listitem><para>Sets the accuracy to nine places after the numeric point.</para></listitem>
   <listitem><para>Clears the display of the thousands separator.</para></listitem>
   <listitem><para>Clears the display of trailing zeroes after the numeric point.</para></listitem>
   <listitem><para>Dismisses the register window if the new mode is Basic.</para></listitem>
</itemizedlist>
</para>
         </sect2>

         <sect2 id="gcalctool-changing-display-area">
                <title>Changing The Display Area</title>
                <para>It is possible to use the mouse to click on the display area and edit it.</para>
                <para>All the normal keyboard shortcuts will work, plus the addition of:
<itemizedlist>
    <listitem><para><keycombo><keycap>Ctrl</keycap><keycap>Delete</keycap></keycombo> which will delete the character to the right of the text cursor</para></listitem>
    <listitem><para><keycap>Home</keycap> which moves the text cursor to the beginning of the display area</para></listitem> 
    <listitem><para><keycap>End</keycap> which moves the text cursor to the end of the display area</para></listitem> 
</itemizedlist>
</para>
         </sect2>

  </sect1>
<!-- ============= Keyboard Shortcuts ============================= -->
  <sect1 id="gcalctool-keyboard-shortcut"> 
    <title>快速參考：鍵盤捷徑</title> 
                <para><xref linkend="gcalctool-TBL-keyboard-shortcut-button"/>、<xref linkend="gcalctool-TBL-keyboard-shortcut-sci-options"/> 和 <xref linkend="gcalctool-TBL-keyboard-shortcut-menu"/> 提供了所有 <application>Calculator</application> 鍵盤捷徑的快速參考。</para>
                <para>When you use the keyboard shortcut for any of the calculator
                      buttons that have a menu associated with them, that menu is displayed.
                      You can then use the arrow keys to select a menu item or the menu item's shortcut.</para>
                <table id="gcalctool-TBL-keyboard-shortcut-button" frame="all">
                  <title><application>Calculator</application> 按鈕之鍵盤捷徑的快速參考</title> 
                  <tgroup cols="4" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>鍵盤捷徑</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>按鈕</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>請參閱</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para><keycap>0</keycap> 到 <keycap>9</keycap> 以內的數字</para></entry>
                             <entry><para><guibutton>0</guibutton> 到 <guibutton>9</guibutton> 以內的數字</para></entry>
                             <entry><para>數字</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>A</keycap> </para></entry>
                             <entry><para><guibutton>Acc</guibutton> </para></entry>
                             <entry><para>精確度</para> </entry>
                             <entry><para><xref linkend="gcalctool-set-acc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>a</keycap> </para></entry>
                             <entry><para><guibutton>A</guibutton> </para></entry>
                             <entry><para>Hexadecimal numerals</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>b</keycap> </para></entry>
                             <entry><para><guibutton>B</guibutton> </para></entry>
                             <entry><para>Hexadecimal numerals</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>C</keycap></para></entry>
                             <entry><para><guibutton>+/-</guibutton></para></entry>
                             <entry><para>變更算術符號</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>c</keycap> </para></entry>
                             <entry><para><guibutton>C</guibutton> </para></entry>
                             <entry><para>Hexadecimal numerals</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>D</keycap></para></entry>
                             <entry><para><guibutton>Ddb</guibutton></para></entry>
                             <entry><para>Double-declining depreciation</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>d</keycap> </para></entry>
                             <entry><para><guibutton>D</guibutton> </para></entry>
                             <entry><para>Hexadecimal numerals</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>E</keycap> </para></entry>
                             <entry><para><guibutton>Exp</guibutton> </para></entry>
                             <entry><para>指數</para> </entry>
                             <entry><para><xref linkend="gcalctool-enter-exp"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>e</keycap> </para></entry>
                             <entry><para><guibutton>E</guibutton> </para></entry>
                             <entry><para>Hexadecimal numerals</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>F</keycap> </para></entry>
                             <entry><para><guibutton>Fun</guibutton> </para></entry>
                             <entry><para>功能</para> </entry>
                             <entry><para><xref linkend="gcalctool-edit-func"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>f</keycap> </para></entry>
                             <entry><para><guibutton>F</guibutton> </para></entry>
                             <entry><para>Hexadecimal numerals</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>G</keycap></para></entry>
                             <entry><para>10<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>10 to the <replaceable>x</replaceable> power</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>g</keycap></para></entry>
                             <entry><para><guibutton>Log</guibutton></para></entry>
                             <entry><para>Common base 10 logarithm</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logs-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>H</keycap></para></entry>
                             <entry><para>2<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>2 to the <replaceable>x</replaceable> power</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>h</keycap></para></entry>
                             <entry><para>Log<subscript>2</subscript></para></entry>
                             <entry><para>Common base 2 logarithm</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logs-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>I</keycap></para></entry>
                             <entry><para><guibutton>Gpm</guibutton></para></entry>
                             <entry><para>Gross Profit Margin</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>i</keycap></para></entry>
                             <entry><para><guibutton>Int</guibutton></para></entry>
                             <entry><para>Integer portion</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>J</keycap></para></entry>
                             <entry><para>Cos<superscript>-1</superscript></para></entry>
                             <entry><para>Inverse Cosine</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>j</keycap></para></entry>
                             <entry><para><guibutton>Cos</guibutton></para></entry>
                             <entry><para>餘弦</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>K</keycap></para></entry>
                             <entry><para>Sin<superscript>-1</superscript></para></entry>
                             <entry><para>Inverse Sine</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>k</keycap></para></entry>
                             <entry><para><guibutton>Sin</guibutton></para></entry>
                             <entry><para>正弦</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>l</keycap></para></entry>
                             <entry><para><guibutton>Sln</guibutton></para></entry>
                             <entry><para>Straight-line depreciation</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>M</keycap></para></entry>
                             <entry><para><guibutton>Mod</guibutton></para></entry>
                             <entry><para>Modulus Division</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>m</keycap></para></entry>
                             <entry><para><guibutton>Ctrm</guibutton></para></entry>
                             <entry><para>Compounding term</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>N</keycap></para></entry>
                             <entry><para>e<superscript><replaceable>x</replaceable></superscript></para></entry>
                             <entry><para>e to the <replaceable>x</replaceable> power</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>n</keycap></para></entry>
                             <entry><para><guibutton>Ln</guibutton></para></entry>
                             <entry><para>Natural logarithm</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logs-calc"/></para> </entry>
                           </row>
                                                   <row valign="top">
                                                         <entry><para><keycap>O</keycap></para></entry>
                             <entry><para><replaceable>x</replaceable><superscript>1/<replaceable>y</replaceable></superscript></para></entry>
                             <entry><para>x to the reciprocal<replaceable>y</replaceable> power</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>o</keycap> or <keycap>^</keycap></para></entry>
                             <entry><para><replaceable>x</replaceable><superscript><replaceable>y</replaceable></superscript></para></entry>
                             <entry><para>x to the <replaceable>y</replaceable> power</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>P</keycap></para></entry>
                             <entry><para><guibutton>Pmt</guibutton></para></entry>
                             <entry><para>Periodic payment</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>p</keycap></para></entry>
                             <entry><para><guibutton>Pv</guibutton></para></entry>
                             <entry><para>Present value</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>R</keycap></para></entry>
                             <entry><para><guibutton>Rcl</guibutton></para></entry>
                             <entry><para>Retrieve value from memory register</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-mem-reg"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>r</keycap></para></entry>
                             <entry><para><guibutton>1/<replaceable>x</replaceable></guibutton></para></entry>
                             <entry><para>倒數</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>S</keycap></para></entry>
                             <entry><para><guibutton>Sto</guibutton></para></entry>
                             <entry><para>Store value in memory register</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-mem-reg"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>s</keycap></para></entry>
                             <entry><para><guibutton>Sqrt</guibutton></para></entry>
                             <entry><para>Square root</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>T</keycap></para></entry>
                             <entry><para><guibutton>利率</guibutton></para></entry>
                             <entry><para>Periodic interest rate</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>t</keycap></para></entry>
                             <entry><para><guibutton>期間</guibutton></para></entry>
                             <entry><para>Payment period</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>u</keycap></para></entry>
                             <entry><para><guibutton>Abs</guibutton></para></entry>
                             <entry><para>Absolute value</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>v</keycap></para></entry>
                             <entry><para><guibutton>Fv</guibutton></para></entry>
                             <entry><para>Future value</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>W</keycap></para></entry>
                             <entry><para>Tan<superscript>-1</superscript></para></entry>
                             <entry><para>Inverse Tan</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>w</keycap></para></entry>
                             <entry><para><guibutton>正切</guibutton></para></entry>
                             <entry><para>正切</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>X</keycap></para></entry>
                             <entry><para><guibutton>Exch</guibutton></para></entry>
                             <entry><para>Exchange memory register value and displayed value</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-mem-reg"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>x</keycap></para></entry>
                             <entry><para><guibutton>Xor</guibutton></para></entry>
                             <entry><para>Bitwise XOR</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>Y</keycap></para></entry>
                             <entry><para><guibutton>Syd</guibutton></para></entry>
                             <entry><para>Sum-of-the-years'-digits depreciation</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-financial-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>Z</keycap></para></entry>
                             <entry><para><guibutton>2's</guibutton></para></entry>
                             <entry><para>2's complement</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>z</keycap></para></entry>
                             <entry><para><guibutton>1's</guibutton></para></entry>
                             <entry><para>1's complement</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>!</keycap></para></entry>
                             <entry><para><guibutton><replaceable>x</replaceable>!</guibutton></para></entry>
                             <entry><para><replaceable>x</replaceable> factorial</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>#</keycap> </para></entry>
                             <entry><para><guibutton>Con</guibutton> </para></entry>
                             <entry><para>Constant value</para> </entry>
                             <entry><para><xref linkend="gcalctool-edit-const"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>%</keycap></para></entry>
                             <entry><para><guibutton>%</guibutton></para></entry>
                             <entry><para>百分比</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>&amp;</keycap></para></entry>
                             <entry><para><guibutton>And</guibutton></para></entry>
                             <entry><para>Bitwise AND</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>(</keycap> and <keycap>)</keycap></para></entry>
                             <entry><para><guibutton>(</guibutton> and <guibutton>)</guibutton></para></entry>
                             <entry><para>括號</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>*</keycap></para></entry>
                             <entry><para><guibutton>*</guibutton></para></entry>
                             <entry><para>乘</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>+</keycap></para></entry>
                             <entry><para><guibutton>+</guibutton></para></entry>
                             <entry><para>加</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>-</keycap></para></entry>
                             <entry><para><guibutton>-</guibutton></para></entry>
                             <entry><para>減</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>。</keycap></para></entry>
                             <entry><para><guibutton>。</guibutton></para></entry>
                             <entry><para>數字點</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>/</keycap></para></entry>
                             <entry><para><guibutton>/</guibutton></para></entry>
                             <entry><para>除</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>：</keycap></para></entry>
                             <entry><para><guibutton>Frac</guibutton></para></entry>
                             <entry><para>Fractional portion</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>&lt;</keycap></para></entry>
                             <entry><para><guibutton>&lt;</guibutton></para></entry>
                             <entry><para>Left shift <replaceable>n</replaceable></para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>=</keycap> 或 <keycap>Return</keycap></para></entry>
                             <entry><para><guibutton>=</guibutton></para></entry>
                             <entry><para>計算結果</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-simple-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>&gt;</keycap></para></entry>
                             <entry><para><guibutton>&gt;</guibutton></para></entry>
                             <entry><para>Right shift <replaceable>n</replaceable></para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>?</keycap></para></entry>
                             <entry><para><guibutton>Rand</guibutton></para></entry>
                             <entry><para>Random number generator</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-misc-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>@</keycap></para></entry>
                             <entry><para><replaceable>x</replaceable><superscript>2</superscript></para></entry>
                             <entry><para>平方</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-adv-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>{</keycap></para></entry>
                             <entry><para><guibutton>Xnor</guibutton></para></entry>
                             <entry><para>Bitwise XNOR</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>[</keycap></para></entry>
                             <entry><para><guibutton>Trunc</guibutton></para></entry>
                             <entry><para>Truncates the number</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-manip"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>|</keycap></para></entry>
                             <entry><para><guibutton>Or</guibutton></para></entry>
                             <entry><para>Bitwise OR</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>~</keycap></para></entry>
                             <entry><para><guibutton>Not</guibutton></para></entry>
                             <entry><para>Bitwise NOT</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-logic-calc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>Backspace</keycap></para></entry>
                             <entry><para><guibutton>Bksp</guibutton></para></entry>
                             <entry><para>Backspace</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-erase-char"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycap>Esc</keycap> or </para>
                                    <para><keycombo><keycap>Ctrl</keycap><keycap>Backspace</keycap></keycombo></para></entry>
                             <entry><para><guibutton>CE</guibutton></para></entry>
                             <entry><para>Clear entry</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-erase-char"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Shift</keycap><keycap>Delete</keycap></keycombo></para></entry>
                             <entry><para><guibutton>Clr</guibutton></para></entry>
                             <entry><para>清除</para> </entry>
                             <entry><para><xref linkend="gcalctool-TBL-erase-char"/></para> </entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
                <table id="gcalctool-TBL-keyboard-shortcut-sci-options" frame="all">
                  <title><application>Calculator</application> 科學模式選項之鍵盤捷徑的快速參考</title> 
                  <tgroup cols="4" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>鍵盤捷徑</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>選項</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>請參閱</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>1</keycap></keycombo></para></entry>
                             <entry><para><guilabel>16 bit</guilabel></para></entry>
                             <entry><para>Set the word size to 16 bits.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-word-length"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>3</keycap></keycombo></para></entry>
                             <entry><para><guilabel>32 bit</guilabel></para></entry>
                             <entry><para>Set the word size to 32 bits.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-word-length"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>6</keycap></keycombo></para></entry>
                             <entry><para><guilabel>64 bit</guilabel></para></entry>
                             <entry><para>Set the word size to 64 bits.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-word-length"/></para></entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>a</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Gradians</guilabel></para></entry>
                             <entry><para>Set the trigonometric type to gradians.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>b</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Bin</guilabel></para></entry>
                             <entry><para>將數值基礎設為二進制。</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-base"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>d</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Dec</guilabel></para></entry>
                             <entry><para>將數值基礎設為十進制。</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-base"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>f</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Fix</guilabel></para></entry>
                             <entry><para>Set the display type to fixed-point format.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-display-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>g</keycap></keycombo></para></entry>
                             <entry><para><guilabel>角度</guilabel></para></entry>
                             <entry><para>Set the trigonometric type to degrees.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>i</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Inv</guilabel></para></entry>
                             <entry><para>選取三角函數使用的反三角選項。</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-options"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>n</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Eng</guilabel></para></entry>
                             <entry><para>Set the display type to engineering format.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-display-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>o</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Oct</guilabel></para></entry>
                             <entry><para>將數值基礎設為八進制。</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-base"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>r</keycap></keycombo></para></entry>
                             <entry><para><guilabel>弧度</guilabel></para></entry>
                             <entry><para>Set the trigonometric type to radians.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>s</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Sci</guilabel></para></entry>
                             <entry><para>Set the display type to scientific format.</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-display-type"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>x</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Hex</guilabel></para></entry>
                             <entry><para>將數值基礎設為十六進制。</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-num-base"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Alt</keycap><keycap>y</keycap></keycombo></para></entry>
                             <entry><para><guilabel>Hyp</guilabel></para></entry>
                             <entry><para>選取三角函數使用的雙曲線選項。</para></entry>
                             <entry><para><xref linkend="gcalctool-TBL-trig-options"/></para> </entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
                <table id="gcalctool-TBL-keyboard-shortcut-menu" frame="all">
                  <title><application>Calculator</application> 功能表項目之鍵盤捷徑的快速參考</title> 
                  <tgroup cols="4" colsep="1" rowsep="1">
                         <colspec colname="COLSPEC0" colwidth="50*"/>
                         <colspec colname="COLSPEC1"/>
                         <colspec colname="COLSPEC2" colwidth="50*"/>
                         <colspec colname="COLSPEC3" colwidth="50*"/>
                         <thead>
                                <row valign="top">
                                  <entry colname="COLSPEC0">
                                         <para>鍵盤捷徑</para></entry>
                                  <entry colname="COLSPEC1">
                                         <para>功能表項目</para></entry>
                                  <entry colname="COLSPEC2">
                                         <para>功能</para></entry>
                                  <entry colname="COLSPEC3">
                                         <para>請參閱</para></entry>
                                </row>
                         </thead> 
                         <tbody> 
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>b</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>檢視</guimenu> <guimenuitem>基本</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Change to Basic mode</para> </entry>
                             <entry><para><xref linkend="gcalctool-basic-mode"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>c</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>編輯</guimenu> <guimenuitem>複製</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>將顯示區域的目前值複製到剪貼簿。</para> </entry>
                             <entry><para><xref linkend="gcalctool-calc-functions"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>f</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>檢視</guimenu> <guimenuitem>財務</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Change to Financial mode</para> </entry>
                             <entry><para><xref linkend="gcalctool-financial-mode"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>h</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>說明</guimenu> <guimenuitem>內容</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>顯示 <application>Calculator</application> 線上說明</para> </entry>
                             <entry><para><xref linkend="gcalctool-intro"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>i</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>編輯</guimenu> <guimenuitem>Insert ASCII Value</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Display the <guilabel>Insert ASCII Value</guilabel> dialog</para> </entry>
                             <entry><para><xref linkend="gcalctool-ins-ascii"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>k</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>檢視</guimenu> <guimenuitem>Show Thousands Separator</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Display the thousands separator
</para> </entry>
                             <entry><para><xref linkend="gcalctool-calc-functions-separator"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>m</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>檢視</guimenu> <guimenuitem>記憶體註冊</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>顯示<guilabel>記憶體註冊</guilabel>視窗</para> </entry>
                             <entry><para><xref linkend="gcalctool-mem-reg"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>p</keycap></keycombo></para></entry>
                                                         <entry><para> <menuchoice> <guimenu>檢視</guimenu> <guimenuitem>Programming</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Change to Programming mode</para> </entry>
                             <entry><para><xref linkend="gcalctool-programming-mode"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>q</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>計算機</guimenu> <guimenuitem>結束</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>結束 <application>Calculator</application> 應用程式</para> </entry>
                             <entry><para><xref linkend="gcalctool-quit"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>s</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>檢視</guimenu> <guimenuitem>科學</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Change to Scientific mode</para> </entry>
                             <entry><para><xref linkend="gcalctool-scientific-mode"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>t</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>檢視</guimenu> <guimenuitem>顯示尾隨的零</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>顯示尾隨的零</para> </entry>
                             <entry><para><xref linkend="gcalctool-set-acc"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>v</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>編輯</guimenu> <guimenuitem>貼上</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>將顯示區域的目前值貼入剪貼簿</para> </entry>
                             <entry><para><xref linkend="gcalctool-calc-functions"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Ctrl</keycap><keycap>z</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>編輯</guimenu> <guimenuitem>Undo</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Undo previous action</para> </entry>
                             <entry><para><xref linkend="gcalctool-undo-redo"/></para> </entry>
                           </row>
                           <row valign="top">
                             <entry><para><keycombo><keycap>Shift</keycap><keycap>Ctrl</keycap><keycap>z</keycap></keycombo></para></entry>
                             <entry><para> <menuchoice> <guimenu>編輯</guimenu> <guimenuitem>Redo</guimenuitem> </menuchoice> </para></entry>
                             <entry><para>Redo an undone action</para> </entry>
                             <entry><para><xref linkend="gcalctool-undo-redo"/></para> </entry>
                           </row>
                         </tbody>
                  </tgroup>
                </table>
  </sect1>
</article>
