#include<reg52.h>
#define uchar unsigned char
sbit duan=P2^6;
sbit wei=P2^7 ;
int index=0;
uchar ms;
uchar s;
uchar code duanS[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar code weiS[]={0xef,0xdf,0xbf};
void initP1(){
EA=1;
ET0=1;
TR0=1;
TMOD|=0x01;
TH0=(65535-19453)/255;
TL0=(65535-19453)%255;
}
void initP3(){
EA=1;
ET1=1;
TR1=1;
TMOD|=0x10;
TH1=60927/255;
TL1=60927%255;
}
void display(uchar i){
P0=weiS[index];
switch(index) {
case 0: wei=1;duan=0;wei=0;duan=1;P0=duanS[i/100];
break;
case 1: wei=1;duan=0;wei=0;duan=1;P0=duanS[i/10%10];
break;
case 2: wei=1;duan=0;wei=0;duan=1;P0=duanS[i%10];
break;
}
index++;
if(index>=3)
index=0；
}
void main(){
initP1();
initP3();
while(1);
}
void interP1() interrupt 1 {
TH0=(65535-19453)/255;
TL0=(65535-19453)%255;
ms++;
if(ms==60){
P1=~P1 ;
s++;
ms=0;
}
if(s>=100)
s=0;
}
void interP3() interrupt 3{
TH1=60927/255;
TL1=60927%255;
display(s);
}
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