這個程序有什么問題，是52單片機(jī)，在開發(fā)板上只是顯示兩個數(shù)碼管一直是零，親各位前輩指點(diǎn)。

#include

#define uchar unsigned char

sbit dual=P2^6;

sbit weal=P2^7;

sbit led=P1^0;

uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,

0x6d,0x7d,0x07,0x7f,0x6f};

uchar num1,num2,num,shi,ge;

void delay(uchar mxs)

{

int i,j;

for(i=mxs;i>0;i--)

   for(j=110;j>0;j--);

}

void xing()

{

dual=1;

P0=table[ge];

dual=0;

P0=0xff;

weal=1;

P0=0xfd;

weal=0;

delay(5);

dual=1;

P0=table[shi];

dual=0;

P0=0xff;

weal=1;

P0=0xfe;

weal=0;

delay(5);

}

void main()

{

TMOD=0x11;

TH0=(65536-45872)/265;

TL0=(65536-45872)%256;

TH1=(65536-45872)/256;

TL1=(65536-45872)%256;

EA=1;

ET0=1;

ET1=1;

TR0=1;

TR1=0;

while(1)

{

  xing();

}

}

void T0_time()interrupt 1

{

TH0=(65536-45872)/256;

TL0=(65536-45872)%256;

num1++;

if(num1==4)

   {

     num1=0;

     led=~led;

   }

}

void T1_time() interrupt 3

{

TH1=(65536-45872)/256;

TL1=(65536-45872)%256;

     num2++;

   if(num2==20)

     {

      num2=0;

      num++;

     if(num==60)

       {

        num=0;

       }     

      ge=num%10;

      shi=num/10;

     }

}