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来自「51单片机大量源码」· 代码 · 共 38 行

C51 COMPILER V8.09   EX69                                                                  07/12/2010 13:39:04 PAGE 1   


C51 COMPILER V8.09, COMPILATION OF MODULE EX69
OBJECT MODULE PLACED IN ex69.OBJ
COMPILER INVOKED BY: D:\Keil\C51\BIN\C51.EXE ex69.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          //无软件消抖的独立式键盘输入实验
   2          #include<reg52.h>    //  包含51单片机寄存器定义的头文件
   3          sbit S1=P3^2;        //将S1位定义为P1.4引脚
   4          sbit LED0=P1^0;       //将LED0位定义为P3.0引脚
   5          void main(void)  //主函数
   6          {
   7   1         LED0=0;       //P3.0引脚输出低电平
   8   1      while(1)
   9   1         {
  10   2                  if(S1==0)   //P1.4引脚输出低电平，按键S1被按下
  11   2                  LED0=~LED0;  //P3.0引脚取反
  12   2                      
  13   2              }
  14   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =      9    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


C51 COMPILATION COMPLETE.  0 WARNING(S),  0 ERROR(S)