51单片机AT89C52控制蜂鸣器proteus仿真

#include<reg52.h> #define uchar unsigned char #define uint unsigned int sbit beep=P0^0; void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=111;y>0;y--); } void main() { while(1) { beep=0; delay(500); beep=1; delay(500); } }