Question

LED在定时器的中断控制下不断闪烁（0.5S开关一次），程序怎么编，急！急！急！

Answer 1

#include <REG51.H>
#define uchar unsigned char
sbit LED =P1^1;
uchar time;
void init_t0int()
{
TMOD=0x01;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
EA=1;
ET0=1;
TR0=1;
}
void main()
{
init_t0int();
while(1);
}

void t0int() interrupt 1
{
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
time++;
if(time==5)
{
time=0;
LED=~LED;
}
}