#include<reg52.h>
unsigned int count=0;
sbit A=P3^0;
void time0_Init(void)
{
TMOD=0x01;
TH0=0x4c;
TL0=0x00;
ET0=1;
EA=1;
TR0=1;
}
void Time0_Int() interrupt 1
{
TH0=0x4c;
TL0=0x00;
count++;
}
void main(void)
{
Time0_Init();
if(count==40)
{A=1;
count=0;
}
}
请大神帮忙看看哪里有问题!