p1口控制继电器.c

北航新c51单片机实验源代码

#include <reg51.h>
sbit Output = P1^0;
void Delay() {
  unsigned int i;
  for (i=0; i<20000; i++) ;
}

void main() {
  while (1) {
    Output = 0;
    Delay();
    Output = 1;
    Delay();
  }
}