0-99.lst

实现数码管动态显示0到99

C51 COMPILER V8.02   0_99                                                                  04/21/2009 21:43:52 PAGE 1   


C51 COMPILER V8.02, COMPILATION OF MODULE 0_99
OBJECT MODULE PLACED IN 0-99.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE 0-99.c BROWSE DEBUG OBJECTEXTEND

line level    source

   1          #include<reg51.h>
   2          sbit p30=P3^0;
   3          sbit p31=P3^1;
   4          unsigned char a,b;
   5          unsigned char i;
   6          char code bittab[]={0x01,0x02};
   7          char code tab[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88}; 
   8          unsigned char dispbuf[2]; //dispbuf
   9          //char code tab[]=//6ms扫描一次
  10          //char code buffer[]=
  11          void Timer0() interrupt 1
  12          {  unsigned char count,tmp;
  13   1      TH0=(65536-6000)%256;    //6ms
  14   1      TL0=(65536-6000)/256;
  15   1      P3=bittab[count];
  16   1      
  17   1      //a=i/10;
  18   1      //b=i%10;
  19   1        tmp=dispbuf[count];    //加了个dispbuf 就可以显示两个值
  20   1       tmp=tab[tmp];
  21   1              P1=tmp;
  22   1              count++;
  23   1      if(count==2)
  24   1      count=0;
  25   1      }
  26          
  27           void delay(int x)
  28           { unsigned int j;
  29   1       while(x--)
  30   1       {for(j=0;j<124;j++);
  31   2       }
  32   1       }
  33          void main()
  34          {
  35   1      
  36   1      TMOD=0X01;
  37   1      TH0=(65536-3000)%256;
  38   1      TL0=(65536-3000)/256;
  39   1      EA=1;
  40   1      ET0=1;
  41   1      TR0=1;
  42   1      //p30=1;
  43   1      //p31=0;
  44   1                      
  45   1      while(1)
  46   1      {
  47   2      //if(counter==10)
  48   2      //{
  49   2      //counter=0;
  50   2      dispbuf[1]=b;
  51   2      dispbuf[0]=a;
  52   2      i++;
  53   2      a=i/10;
  54   2      b=i%10;
  55   2      if(i==99)
C51 COMPILER V8.02   0_99                                                                  04/21/2009 21:43:52 PAGE 2   

  56   2      i=0;
  57   2      
  58   2        delay(100);
  59   2       }
  60   1      
  61   1      
  62   1                      }
  63          
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MODULE INFORMATION:   STATIC OVERLAYABLE
   CODE SIZE        =    151    ----
   CONSTANT SIZE    =     13    ----
   XDATA SIZE       =   ----    ----
   PDATA SIZE       =   ----    ----
   DATA SIZE        =      5       1
   IDATA SIZE       =   ----    ----
   BIT SIZE         =   ----    ----
END OF MODULE INFORMATION.


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