求救。用573控制数码管加定时器0。为什么结果没有显示0和8

#include <reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit LE=P1^0;
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
uchar code table1[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f} ;
uchar i,k,j;
void main()
{ i=0;j=0;
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
EA=1;
ET0=1;
TR0=1;
while(1)
{
if(k==20)
{
k=0;
LE=0;
P0=table[i];
i++;
LE=1;
P2=table1[j];
j++;
LE=0;
}
if(i==16)
i=0;
if(j==8)
j=0;
}
}
void timer0() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
k++;
}