蜂鸣器03.c

89s51的c51源程序

#include<AT89X51.h>
unsigned char i;
void delay(unsigned char t,k);
main()
{
while(1)
{

P3_0=0;
P0_0=0;
delay(10,100);
P3_0=1;
P0_0=1;
delay(10,300);


P3_0=0;
P0_1=0;
delay(10,30);
P3_0=1;
P0_1=1;
delay(10,200);


P3_0=0;
P0_1=0;
delay(10,30);
P3_0=1;
P0_1=1;
delay(10,1000);
}
}

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