问题描述：烧入程序之后，LED显示如图所示，望各位指教
#include<AT89X51.h>
#define uchar unsigned char
uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99
,0x92,0x82,0xf8,0x80,0x90};//共阳数码管
uchar time,hour_now,min_now,sec_now,hour_a1,min_a1,sec_a1,key;
sbit beep=P3^7;
void delayms(uchar i)
{
while(i--);
}
void write(uchar num,chose)
{
uchar i;
for(i=0;i<2;i++)
{
P0=0xff;
P2=~chose;//位选
if(i==0)
{
P0=table[num%10];//段选
}
else
P0=table[num/10];//段选
chose=chose<<1;
delayms(5000);
}
}
void show()
{
P0=0xff;
P2=0xdb;
P0=0xbf;
delayms(5000);
}//-隔开时，分，秒显示
void init()
{
TMOD=0x01;
TH0=0x4c;
TL0=0x00;
EA=1;
ET0=1;
TR0=1;
}
void display(uchar hour_now,uchar min_now,uchar sec_now)
{
write(sec_now,0x01);
write(min_now,0x08);
write(hour_now,0x40);
show();
}
void jianpanjiance()
{
uchar temp;
P1=0xfe;
temp=P1;
if(temp!=temp&0xf0)
{
delayms(10000);
temp=P1;
if(temp!=temp&0xf0)
{
temp=P1;
switch(temp)
{
case 0xee:
key=1;
break;
case 0xde:
key=2;
break;
case 0xbe:
key=3;
break;
case 0x7e:
key=4;
break;
}
}
}
while(temp!=0xf0)
{
temp=P1;
temp=temp&0xf0;
}
P1=0xfd;
temp=P1;
if(temp!=temp&0xf0)
{
delayms(10000);
temp=P1;
if(temp!=temp&0xf0)
{
temp=P1;
switch(temp)
{
case 0xed:
key=5;
break;
case 0xdd:
key=6;
break;
case 0xbd:
key=7;
break;
case 0x7d:
key=8;
break;
}
}
}
while(temp!=0xf0)
{
temp=P1;
temp=temp&0xf0;
}
P1=0xfb;
temp=P1;
if(temp!=temp&0xf0)
{
delayms(10000);
temp=P1;
if(temp!=temp&0xf0)
{
temp=P1;
switch(temp)
{
case 0xeb:
key=9;
break;
case 0xdb:
key=10;
break;
case 0xbb:
key=11;
break;
case 0x7b:
key=12;
break;
}
}
}
while(temp!=0xf0)
{
temp=P1;
temp=temp&0xf0;
}
P1=0xf7;
temp=P1;
if(temp!=temp&0xf0)
{
delayms(10000);
temp=P1;
if(temp!=temp&0xf0)
{
temp=P1;
switch(temp)
{
case 0xe7:
key=13;
break;
case 0xd7:
key=14;
break;
case 0xb7:
key=15;
break;
case 0x77:
key=16;
break;
}
}
}
while(temp!=0xf0)
{
temp=P1;
temp=temp&0xf0;
}
}
void display_key(uchar hour,uchar min,uchar sec,tkey)
{
uchar i=0,take_key;
uchar data timenum[]={0,0,0,0,0,0};
jianpanjiance();
if(key==tkey)
{
take_key=1;
timenum[0]=hour/10;
timenum[1]=hour%10;
timenum[2]=min/10;
timenum[3]=min%10;
while(take_key==1)
{
jianpanjiance();
if(key<11)
{
i++;
timenum[i-1]=key;
key=17;
}
if(key==12)
take_key=0;
if(i==6)
take_key=0;
hour=timenum[0]*10+timenum[1];
min=timenum[2]*10+timenum[3];
sec=timenum[4]*10+timenum[5];
display(hour,min,sec);
}
if(sec>59)
sec=0;
if(min>59)
min=0;
if(hour>23)
hour=0;
if(key==11)
{
sec_now=sec;
min_now=min;
hour_now=hour;
}
if(key==13)
{
sec_a1=sec;
min_a1=min;
hour_a1=hour;
}
}
}
void main()
{
hour_now=23;
min_now=37;
sec_now=50;
display(hour_now,min_now,sec_now);
init();
while(1)
{
display(hour_now,min_now,sec_now);
display_key(hour_now,min_now,sec_now,11);
display_key(hour_a1,min_a1,sec_a1,13);
}
}
void T0_Time() interrupt 1
{
TH0=0x4c;
TL0=0x00;
time++;
if(time==20)
{
time=0;
if(hour_now==hour_a1&min_now==min_a1)
beep=0;
else
beep=1;
sec_now++;
if(sec_now==60)
{
sec_now=0;
min_now++;
if(min_now==60)
{
min_now=0;
hour_now++;
if(hour_now==24)
{
hour_now=0;
}
}
}
}
}
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