蜂鸣器发声

#include<reg52.h>
//#define uint unsigned int
typedef unsigned int uint;
void delay(int z);
sbit beep=P1^5;
void main()
{
while(1)
{
beep=~beep;
delay(1000);//1s
}
void delay(int z)
{
uint i,j;
for(i=z;i>0;i++)
for(j=110;j>0;j++);
}