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大家看下这个程序，简单的1602程序，不知道为什么小时位进不了位，只有分钟，秒可以进位，大家帮帮忙。。我真的身心疲惫了
#include<reg52.h>
#define uint unsigned int
#define uchar unsigned char
sbit wela=P2^7;
sbit dula=P2^6;
sbit lcden=P3^4;
sbit lcdrs=P3^5;
sbit lcdwr=P3^6;
uchar table[]=" 2011-11-14 MON ";
uchar table1[]=" 23:59:00 ";
uchar count,miao,fen;
uint shi;
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_com(com)//写指令函数
{
lcdrs=0;
lcden=0;
P0=com;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void write_dat(dat)//写数据函数
{
lcdrs=1;
lcden=0;
P0=dat;
delay(5);
lcden=1;
delay(5);
lcden=0;
}
void init()
{uchar num;
wela=0;
dula=0;
lcden=0;
lcdwr=0;
write_com(0x38);
delay(1);
write_com(0x0c);
write_com(0x06);
//write_com(0x01);
write_com(0x80);
for(num=0;num<16;num++)
{
write_dat(table[num]);
delay(20);
}
write_com(0x80+0x40);
for(num=0;num<12;num++)
{
write_dat(table1[num]);
delay(20);
}
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
miao=54;
//shi=23;
}
void write_sfm(uchar add, uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_com(0x80+0x40+add);
write_dat(0x30+shi);
write_dat(0x30+ge);
}
void main()
{
init();
while(1)
{
if(count==20)
{ count=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
}
write_sfm(3,shi);
}
write_sfm(6,fen);
}
write_sfm(9,miao);
}
}
}
void timer0() interrupt 1
{ TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
count++;} | 
