大婶们 帮忙看看哪里出错了 万分感谢

为什么数码管不显示呢 怎么修改啊
程序在这里
#include<reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code dispcode[]={0x3f,0x08,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,};
uchar seconde=0;
uchar minite=0;
uchar hour=11;
sbit P1_0=P1^0;
sbit P1_1=P1^1;
sbit P1_2=P1^2;
void delay(uchar k);
void time_pro();
void display();
void keyscan();
void delay (uchar k)
{
uchar i,j;
for (i=k;i>0;i--)
for (j=110;j>0;j--) ;
}
void time_pro(void)
{
if(seconde==60)
{
seconde=0;
minite++;
if(minite==60)
{
minite=0;
hour++;
if(hour==24)
{
hour=0;
}
}
}
}
void display(void)
{
P2=0xfe; //11111110
P0=dispcode[hour/10];
delay(5);
P2=0xfd; //11111101
P0=dispcode[hour%10]|0X80; //²»¶® 0xC0
delay(5);
P2=0xfb; //11111011
P0=dispcode[minite/10];
delay(5);
P2=0xf7; //11110111
P0=dispcode[minite%10]|0x80;
delay(0);
P2=0xef; //11101111
P0=dispcode[seconde/10];
delay(5);
P2=0xdf; //11011111
P0=dispcode[seconde%10]|0x80;
delay(5);
}
void keyscan(void)
{
if(P1_0==0) //=
delay(30);
if(P1_0==0)
{
seconde++;
if(seconde==60)
{
seconde=0;
}
}
if(P1_1==0) //=
delay(30) ;
if(P1_1==0)
{
minite++;
if(minite==60)
{
minite=0;
}
}
if(P1_2==0)
delay(30);
if(P1_2==0)
{
hour++;
if(hour==24)
{
hour=0;
}
}
}
void timer0(void) interrupt 1 using 0
{
uchar x;
TH0=(65536-50000)/256;
TMOD=0x11; //0x01
x++;
if(x==20)
{
seconde++;
x=0;
}
}
mian (void)
{
P1=0xff;
TMOD=0x11;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
while(1)
{
keyscan();
time_pro();
display();
}
}
研究半天了 不知道错在哪里