顯示2020閃三下再顯示0615

#include <reg51.h>
char code data_7seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
char act[]={0xfe,0xfd,0xfb,0xf7};
char disp[4]={0,0,0,0};
int value;
int di,hi,lo;
void delay(int k)
{
int i,j;
for(i=0;i<k;i++)
for(j=0;j<120;j++)
      ;
}
void t0_isr(void) interrupt 1
{
TH0=value/256;
TL0=value%256;
P1=act[di];
P0=disp[di];
di++;
if(di==4) di=0;
}
void init()
{
value=65536-2000;
TH0=hi=value/256;
TL0=lo=value%256;
TMOD=0x01;
IE=0x82;
TR0=1;
}
void show1_7seg()
{
  disp[0]=data_7seg[0];
disp[1]=data_7seg[2];
disp[2]=data_7seg[0];
disp[3]=data_7seg[2];
}

void show2_7seg()
{
disp[0]=data_7seg[5];
disp[1]=data_7seg[1];
disp[2]=data_7seg[6];
disp[3]=data_7seg[0];
}
void test_7seg()
{
int i;
for(i=0;i<3;i++)
{
show1_7seg();delay(500);
TR0=0;P1==0xFF;P0=0XFF;delay(500);
TR0=1;
}
show2_7seg();delay(2000);

}
main()
{
init();
test_7seg();
while(1)
{
;
}
}