程序如下：
#include#include unsigned char k;sbit beep=P2^3; //取P2口的第三位（蜂鸣器接口）//延时函数申明void delay(unsigned int time);//延时函数void delay(unsigned int time){ unsigned int i=0,j=0; for(i=0;i
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程序如下：
#include#include unsigned char k;sbit beep=P2^3; //取P2口的第三位（蜂鸣器接口）//延时函数申明void delay(unsigned int time);//延时函数void delay(unsigned int time){ unsigned int i=0,j=0; for(i=0;i
转载于:https://my.oschina.net/871120/blog/367389