#include <reg51.h>
#define uchar unsigned char
#define uint unsigned int
uchar code
DSY_CODE[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};
uchar Disp_Buffer[]={0,0,0,0,0};
uchar code DSY_BIT[]={0xFE,0xFD,0xFB,0xF7,0xEF};
uchar Count=0;
sbitK1=P1^0;
void Delay(uchar X)
{
 uchar i;
 while(X--)for(i=0;i<120;i++);
 }
void main()
{
  uchar i;
  IE=0x8A;
  TMOD=0X51;
  TH0=(65536-50000)/256;
  TL0=(65536-50000)%256;
  while(1)
  {
  if(K1==0)
  {
    Delay(10);
    if(K1==0)
    {
    TR1=TR0=1;
    }
    }
    else
    {
     for(i=0;i<5;i++)
     {
     P2=DSY_BIT[i];
     P0=DSY_CODE[Disp_Buffer[i]];
     Delay(2);
     }
     }
     }
     }
     void INT_T0() interrupt 1
     {
     uint Tmp;
     TH0=(65536-50000)/256;
     TL0=(65536-50000)%256;
     if(++Count==200)
     {
     TR1=TR0=0;
     Count=0;
     Tmp=TH1*256+TL1;
     Disp_Buffer[4]=Tmp*6/10000;
     Disp_Buffer[3]=Tmp*6/1000%10;
     Disp_Buffer[2]=Tmp*6/100%10;
     Disp_Buffer[1]=Tmp*6%10;
     TH1=TL1=0;
     }
     }