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<HTML><HEAD><TITLE>一步步教你如何第一次使用Monitor-51仿真器，LED灯和按键试验</TITLE>
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<p><strong><font color="#FF0000" size="5">一步步教你如何第一次使用Monitor-51仿真器，LED灯和按键试验</font><br>
</strong></p>
<p>本教程将会从最基础的开始，一步步教你建立工程，编辑文件，编译文件，仿真和调试程序，直到试验板上出现了你想要的结果...<br>
<br>
<a href="keyandledtest.rar" target="_blank">本文使用的C51例程下载 keyandledtest.rar</a></p>
<p><br>
<img border="0" src="图片/KeyAnd4.jpg" width="309" height="239"><br>
<b><span style="font-family:宋体">第一步，</span></b><span style="font-family:
宋体">连接好主机板上的串口线和电源线插好。将串口线的一端插在主机上，另一端插在计算机的串口上，并记住串口号，通常计算机靠上面的一个串口是<span lang="EN-US">com1，下面一个是com2，这些同计算机BIOS设置有关。<o:p>
</o:p>
</span></span><br>
<br>
试验板上的LED和按键与51单片机的连接如以下电路图，我们编程时必须按照线路连接进行编程，以便能够驱动试验板上的硬件。<br>
<img border="0" src="图片/KeyAnd5.gif" width="482" height="324"><br>
<br>
现在我们开始进行软件编程。 打开keilC51软件，可以看到以下界面：<br>
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<br>
<span style="mso-bidi-font-size: 12.0pt; font-family: 宋体; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="4">我们先在<span lang="EN-US">e:盘的根目录下建“e:/跑马灯”目录，以方便程序的编写和调试，调试过程中产生的文件都将放在这个目录中。<br>
<br>
现在开始建立一个工程，点菜单Project/New Project,选择保存在在“e:/
跑马灯”目录，文件名为“跑马灯”,点保存，如下图：</span></font></span><span style="font-size:10.5pt;mso-bidi-font-size:12.0pt;
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<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
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<img src="图片/KeyAnd7.jpg" v:shapes="_x0000_i1025" width="470" height="248"><!--[if gte mso 9]><xml>
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<br>
<span style="mso-bidi-font-size: 12.0pt; font-family: 宋体; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="4">这时，将出现下面的窗口，综合我们现在要编的程序的规模，我们选择最常用的<span lang="EN-US">Atmel89C52.这个芯片拥有标准52内核，片内资源在右边的框中有显示。<br>
<font color="#0000FF">注： </font><font color="#FF00FF">由于仿真机是用来仿真标准的52内核（兼容51内核），对于某些拥有特殊功能的51单片机（如ADuC812），并不能仿真它的特殊功能部分，而是只能仿真其中的标准52内核部分。即使市面上的高级的51仿真机都是如此。</font></span></font></span><br>
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<img src="图片/KeyAnd8.jpg" v:shapes="_x0000_i1025" width="626" height="419"></span><br>
<br>
<span style="mso-bidi-font-size: 12.0pt; font-family: 宋体; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="4">点确定，该页面自动关闭。</font></span></p>
<p><font size="4"><span style="mso-bidi-font-size: 12.0pt; font-family: 宋体; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">
在7.06以上的版本还会出现以下提示框，在这里，我们不去理会它，选择“否”，跳过既可。</span></font></p>
<p><img border="0" src="fp01.h1.jpg" width="618" height="145"></p>
<p>
<span style="mso-bidi-font-size: 12.0pt; font-family: 宋体; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="4"><span lang="EN-US"><br>
现在我们开始建立新的程序文件，点击菜单File/New，将新建立一个新的文本文件，点击File/Save，将这个文件保存为“led.c”。<br>
<br>
再点击左边的那个框框里的“Target 1”，左边的“＋”号。将展开“Source
Group 1”项，用右键点击“Source Group 1”项，选择“Add Files to
Group‘Source Group 1’”，<br>
将跳出下面的窗口：</span></font></span><span style="font-size:10.5pt;mso-bidi-font-size:12.0pt;
font-family:宋体;mso-bidi-font-family:"Times New Roman";mso-font-kerning:1.0pt;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA" lang="EN-US"><br style="mso-special-character:line-break">
<br style="mso-special-character:line-break">
<span lang="EN-US" style="font-size:10.5pt;mso-bidi-font-size:
12.0pt;font-family:"Times New Roman";mso-fareast-font-family:宋体;mso-font-kerning:
1.0pt;mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:
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<img src="图片/KeyAnd9.jpg" v:shapes="_x0000_i1025" width="470" height="262"><!--[if gte mso 9]><xml>
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</span></span><br>
<span style="mso-bidi-font-size: 12.0pt; font-family: 宋体; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><font size="4">选择<span lang="EN-US">“led.c
”文件，点add将led.c文件加入到我们的工程中。<br>
这时“Source Group 1”项左边也会出现“＋”号，点击它，展开文件列表，现在只有一个文件，因为我们的程序比较简单，所以一个文件也就足够了。如果功能很复杂，就可以将各个功能的程序放在一个专门的文件，一般我们称每个文件为一个程序模块，一个工程里面可以有很多的模块。点击这个文件名，该文件就会被打开并出现在窗口最上方，方便您进行编程和修改。<br>
现在我们要在<span style="color: blue; mso-bidi-font-size: 12.0pt; font-family: 宋体; mso-bidi-font-family: Times New Roman; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA">led.c</span>文件里开始输入我们的程序代码了。<br>
我们先输入以下程序：</span></font></span><span style="font-size:10.5pt;mso-bidi-font-size:12.0pt;
font-family:宋体;mso-bidi-font-family:"Times New Roman";mso-font-kerning:1.0pt;
mso-ansi-language:EN-US;mso-fareast-language:ZH-CN;mso-bidi-language:AR-SA" lang="EN-US"><br style="mso-special-character:line-break">
</span><br>
<br>
<font color="#0000ff">//这是包含默认的寄存器头文件，</font><br>
<font color="#0000ff">//该文件在keil自己的目录里，包含了所有52内核的寄存器定义。</font><br>
<font color="#0000ff">#include <reg52.h><br>
#include <intrins.h><br>
<br>
#define TRUE 1<br>
#define FLASE 0<br>
<br>
sbit led1=P1^0;<br>
sbit led2=P1^1;<br>
sbit led3=P1^2;<br>
sbit led4=P1^3;<br>
sbit key1=P1^4;<br>
sbit key2=P1^5;<br>
sbit key3=P1^6;<br>
sbit key4=P1^7;<br>
<br>
void delay(void) //延时子程序<br>
{<br>
unsigned int i;<br>
for(i=0;i<20000;i++)<br>
{<br>
_nop_();<br>
_nop_(); <br>
} <br>
}<br>
<br>
unsigned char getkey(void)<br>
{<br>
if(key1==0)<br>
return 1;<br>
if(key2==0)<br>
return 2;<br>
if(key3==0)<br>
return 3;<br>
if(key4==0)<br>
return 4; <br>
}
</font></p>
<p>
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