摘要：
//蜂鸣器#include<reg51.h>#include<intrins.h>#define uint unsigned int#define uchar unsigned char uchar temp;sbit beep=P2^3;sbit D1=P1^0;void deplay();/*void main(){while(1){D1=0;deplay();D1=1;deplay();}}*/void main(){temp=0xfe;P1=temp;beep=0;while(1){temp=_crol_(temp,1);deplay();P1=temp;dep 阅读全文
