key.lst

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C51 COMPILER V7.06   KEY                                                                   10/09/2008 23:00:52 PAGE 1   


C51 COMPILER V7.06, COMPILATION OF MODULE KEY
OBJECT MODULE PLACED IN key.OBJ
COMPILER INVOKED BY: d:\Keil2\C51\BIN\C51.EXE key.c BROWSE DEBUG OBJECTEXTEND

stmt level    source

   1          #include <reg52.h>
   2          
   3          
   4           
   5          sbit key1=P3^0;//定义按键位置
   6          sbit key2=P3^1;
   7          sbit key3=P3^2;
   8          sbit key4=P3^3;
   9          
  10          unsigned char const dofly[]={0xf9,0xb0,0x92,0x80};// code table 1358
  11          ////////////////////////////////////////////////////////
  12          void delay(unsigned int cnt)
  13          {
  14   1       while(--cnt);
  15   1      }
  16          ///////////////////////////////////////////////////////
  17          main()
  18          {
  19   1       
  20   1      
  21   1       P2=0x00;//数码管全亮
  22   1       while(1)
  23   1            { 
  24   2            if(!key1)     //按下相应的按键，数码管显示相应的码值
  25   2                   P0=0xf9;//数码管显示"1"
  26   2                if(!key2)
  27   2                   P0=0xa4;//2
  28   2                if(!key3)
  29   2                   P0=0xb0;//3
  30   2                if(!key4)
  31   2                   P0=0x99;//4
  32   2      
  33   2            }
  34   1      }//如果有干扰请加去抖程序
  35          //红外接收头部分用黑色物质遮光，防止干扰按键


MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =     39    ----
   CONSTANT SIZE    =   ----    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      4    ----
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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