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#include<reg51.h>
unsigned char code seg[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
int G,S;
void main()
{ P3= 0xff;
P2= 0xc0;
P1= 0xc0;
G = 0;
TMOD =0x60;
TH1 = 0xff;
TL1 = 0xff;
TR1 = 1;
ET1 = 1;
EA = 1;
while(1) {}
}
void timer0() interrupt 3
{
G++;
if (G==10)
{ G=0; S++;}
if(S==10) S =0;
P1=seg[G];
P2=seg[S];
}
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