test.lst

单片机实例程序（按键查询程序）适合初学者使用

C51 COMPILER V7.09   TEST                                                                  04/12/2007 09:14:26 PAGE 1   


C51 COMPILER V7.09, COMPILATION OF MODULE TEST
OBJECT MODULE PLACED IN test.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE test.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          /************************* *********** 程序功能 **************************************************
   2          按第一个按键，LED灯1和2亮；按第二个按键，LED灯1、2、3、4亮；按第三个按键，LED灯1、2、3、4、5、6亮
   3          按第四个按键，LED灯全亮；  按第五个按键，LED灯全灭；                                                            
   4          ********************************************************************************************/
   5          #include <reg52.h>
   6          
   7          sbit key1 = P3^2;
   8          sbit key2 = P3^3;
   9          sbit key3 = P3^4;
  10          sbit key4 = P3^5;
  11          sbit key5 = P3^7;
  12          
  13          void Delay(int m)
  14          {
  15   1              while(--m);
  16   1      }
  17          
  18          void main(void)
  19          {
  20   1              while(1)
  21   1              {
  22   2                      if(!key1)
  23   2                      {
  24   3                              P1 = 0xFC;
  25   3                              Delay(50000);
  26   3                      }
  27   2                      if(!key2)
  28   2                      {
  29   3                              P1 = 0xF0;
  30   3                              Delay(50000);
  31   3                      }
  32   2                      if(!key3)
  33   2                      {
  34   3                              P1 = 0xC0;
  35   3                              Delay(50000);
  36   3                      }
  37   2                      if(!key4)
  38   2                      {
  39   3                              P1 = 0x00;
  40   3                              Delay(50000);
  41   3                      }
  42   2                      if(!key5)
  43   2                      {
  44   3                              P1 = 0xFF;
  45   3                              Delay(50000);
  46   3                      }
  47   2              }
  48   1      }


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     61    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
C51 COMPILER V7.09   TEST                                                                  04/12/2007 09:14:26 PAGE 2   

   DATA SIZE        =   ----    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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