LED闪烁及流水灯——清翔51单片机（V3.0）

 #include <reg52.h>

 unsigned int i;//0~65535

 void main() //main函数自身会循环
 {
     while(1)
    {
        P1 = 0;    //点亮P1口8个LED灯
        i = 65535;
        while(i--);
        P1 = 0xff; //1111 1111 熄灭P1口8个LED灯
        i = 65535;
        while(i--);
    }    
 }

#include <reg52.h>
#include <intrins.h>

#define uint unsigned int
#define uchar unsigned char

uchar temp;//LED灯相关变量

void delay(uint z) //毫秒级延时函数定义
{
    uint x,y;
    for(x = z;x > 0;x--)
        for(y = 114;y > 0;y--);;
}

void main()
{
    temp = 0xfe;
    P1 = temp;
    delay(100);
    while(1)
    {
        temp = _crol_(temp,1);
        P1 = temp;
         delay(100);
     }

}