led.c

52单片机开发板的实例程序

#include "reg52.h"
#define uint unsigned int //宏定义
#define uchar unsigned char//宏定义
sbit LED=P0^0;
void main()
{
	uint i;
	while(1)
	{
		LED=0;	  //点亮发光二极管
		i=60000;  //以下几行是延时
		while(i)i--;
		i=40000;
		while(i)i--;
		LED=1;		//熄灭发光二极管
		i=60000;	//以下几行是延时
		while(i)i--;
		i=40000;
		while(i)i--;	
	}
}