led.lst

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C51 COMPILER V8.02   LED                                                                   11/02/2010 21:20:18 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE LED
OBJECT MODULE PLACED IN led.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE led.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>                    //包含头文件
   2          sbit led = P0^0;                     //利用位定义，一个                     
   3          void delay(unsigned char x)          //延时函数
   4          {
   5   1              unsigned char i,j;
   6   1              for(i = 0;i < x;i++)
   7   1              for(j = 0;j < 200;j++);
   8   1      }
   9          void main(void)                     //主函数
  10          {
  11   1              P0 = 0x00;                                              //让P0输出低电平，8个led全灭
  12   1              while(1)                        //程序无限循环
  13   1              {
  14   2                      led = !led;                                     //led闪烁
  15   2                      delay(250);                 //实参不能大于255，因为形参x为char  
  16   2              }
  17   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     29    ----
   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)