main.c

如果你是才学C51的话

#include "reg52.h"
#define unint unsigned int
#define unchar unsigned char

void Delay();
unint show[11]={0x3f,0x06,0x5b,0x4f,
                 0x66,0x6d,0x7d,0x07,
				 0x7f,0x90,0x00};
unint *minute0=show;
unint *minute1=show;
unint *second0=show;
unint *second1=show;

void main()
{
 
 while(1)
  {
  P2=0xfe;
  P1=*second1;
  Delay();
  P2=0xfd;
  P1=*second0;
  Delay();
  P2=0xfb;
  P1=*minute1;
  Delay();
  P2=0xf7;
  P1=*minute0;
  Delay();
 } 
}
void Delay()
{
  unint i,j;
  for(i=0;i<=255;i++)
    for(j=0;j<=200;j++);
}