时钟.c

51单片机相关驱动程序 51单片机最小系统测试程序

#include<reg51.h>
#include<absacc.h>
#define uchar unsigned char 
  uchar data a,b,c,d;
//unsigned char b;     //小时数据区
//unsigned char c;     //分钟数据区
//unsigned char d;     //秒钟数据区

 uchar code tabe[]={0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f,0x6f,};
void delay();
 void yan( ) interrupt 1 using 0
 {
  TH0=0XD8;  TL0=0XF0;  a--;
  if(!a)
    {
      d++;
    if(d==60)
       {
         c++;
         if(c==60)
         {
           b++;
            if(b==24)
                b=c=d=0;
             }
               }
                 }
             else  ;             
               }
 void main( )
  {
  IE=0X82;
  a=100; b=12;c=0;d=0;
  TH0=0XD8; TL0=0XF0;    
  TMOD=0X01;
  TCON=0X10;
  while(1)
    { P2=0xfe;
      P0=tabe[d%10];
      delay();
      P2=0XFD;
      P0=tabe[d];
      delay();
      P2=0XFB;
      P0=tabe[c%10];
      delay();
      P2=0XF7;
      P0=tabe[c];
      delay();
      P2=0XEF;
      P0=tabe[b%10];
      delay();
      P2=0XDF;
      P0=tabe[b];
      delay();
        }
    } 
void delay()
 { int i=5000;
    do {i=i-1;} while(i>1);
         }