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附上程序代码和原理图，程序正确，但是功能实现不起来
#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
sbit wela=P2^7;
sbit dula=P2^6;
sbit key1=P3^4;
sbit key2=P3^5;
void display(uchar,uchar,uchar) ;
uchar shi,fen,miao,i;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
void delayms(uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void main()
{
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
while(1)
{
display(shi,fen,miao);
}
}
void display(uchar shi,fen,miao)
{
dula=1;
P0=0xfc;
dula=0;
P0=0xff;
wela=1;
P0=table[shi];
wela=0;
dula=1;
P0=0xf3;
dula=0;
P0=0xff;
wela=1;
P0=table[fen];
wela=0;
dula=1;
P0=0xcf;
dula=0;
P0=0xff;
wela=1;
P0=table[miao];
wela=0;
}
void T0_time() interrupt 1
{
TH0=(65536-45872)/256;
TL0=(65536-45872)%256;
i++;
if(i==20)
{
i = 0;
miao++;
if(miao==60)
{
miao = 0;
fen++;
if(fen==60)
{
fen = 0;
shi++;
if(shi==24)
{
shi = 0;
}
}
}
}
}
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