h6.c

来自「51单片机程序C和汇编」· C语言 代码 · 共 21 行

#include <reg51.h>

sbit Speaker = P1^0;

void Delay()
{
  unsigned char i;
  for (i=0; i<50; i++);
}

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