蜂鸣器01.c

来自「89s51的c51源程序」· C语言 代码 · 共 25 行

#include<AT89X51.h>
unsigned char i;
void delay(unsigned char t,k);
main()
{
while(1)
{
P0_0=1;
P3_0=1;
delay(10,500);
P0_0=0;
P3_0=0;
delay(10,30);
}
}

void delay(unsigned char t,k)//延时子程序
{
while(--k)
{
while(--t);
}
}