要5个51单片机花样流水灯的程序加注解

以下是5个51单片机花样流水灯的程序，已经加上注释说明每一行代码的功能和作用：

#include <reg51.h> //头文件，包含了51单片机的寄存器定义

#define LED_P0 P0 //定义LED控制端口
#define LED_COUNT 8 //定义LED数量

//延时函数，用于控制LED灯的闪烁频率
void delay(unsigned int time) 
{
    unsigned int i,j;
    for(i=0;i<time;i++)
        for(j=0;j<125;j++);
}

void main() //主函数
{
    unsigned char i=0; //定义计数器变量i，并初始化为0
    while(1) //进入循环
    {
        LED_P0 = ~(1<<i); //控制LED灯亮或灭，i表示当前LED的位置
        delay(100); //延时100ms
        i++; //i自增
        if(i==LED_COUNT) //当i等于LED数量时，将i重置为0
            i=0;
    }
}

#include <reg51.h>

#define LED_P0 P0
#define LED_COUNT 8

void delay(unsigned int time) 
{
    unsigned int i,j;
    for(i=0;i<time;i++)
        for(j=0;j<125;j++);
}

void main()
{
    unsigned char i=0;
    while(1)
    {
        LED_P0 = ~(1<<i);
        delay(100);
        if(i==0) //当i等于0时，反转LED灯的方向
        {
            LED_P0 = ~(1<<LED_COUNT); //先将LED_COUNT位取反
            delay(100); //延时100ms
        }
        i++; //i自增
        if(i==LED_COUNT) //当i等于LED数量时，将i重置为0
            i=0;
    }
}

#include <reg51.h>

#define LED_P0 P0
#define LED_COUNT 8

void delay(unsigned int time) 
{
    unsigned int i,j;
    for(i=0;i<time;i++)
        for(j=0;j<125;j++);
}

void main()
{
    unsigned char i=0;
    while(1)
    {
        LED_P0 = ~(1<<i);
        delay(100);
        if(i==0) //当i等于0时，倒序灯光输出
        {
            LED_P0 = ~(0xff>>LED_COUNT); //先将LED_COUNT个灯全部点亮
            delay(100); //延时100ms
            LED_P0 = 0xff; //再将所有LED灯熄灭
            delay(100); //延时100ms
        }
        i++; //i自增
        if(i==LED_COUNT) //当i等于LED数量时，将i重置为0
            i=0;
    }
}

#include <reg51.h>

#define LED_P0 P0
#define LED_COUNT 8

void delay(unsigned int time) 
{
    unsigned int i,j;
    for(i=0;i<time;i++)
        for(j=0;j<125;j++);
}

void main()
{
    unsigned char i=0;
    while(1)
    {
        LED_P0 = ~(1<<i);
        delay(100);
        if(i==0) //当i等于0时，交替输出灯光
        {
            LED_P0 = 0x55; //01010101b
            delay(100); //延时100ms
            LED_P0 = 0xaa; //10101010b
            delay(100); //延时100ms
        }
        i++; //i自增
        if(i==LED_COUNT) //当i等于LED数量时，将i重置为0
            i=0;
    }
}

#include <reg51.h>

#define LED_P0 P0
#define LED_COUNT 8

void delay(unsigned int time) 
{
    unsigned int i,j;
    for(i=0;i<time;i++)
        for(j=0;j<125;j++);
}

void main()
{
    unsigned char i=0;
    while(1)
    {
        LED_P0 = ~(1<<i);
        delay(100);
        if(i==0) //当i等于0时，模拟跑马灯效果
        {
            LED_P0 = 0x80; //10000000b
            delay(100); //延时100ms
            LED_P0 = 0x40; //01000000b
            delay(100); //延时100ms
            LED_P0 = 0x20; //00100000b
            delay(100); //延时100ms
            LED_P0 = 0x10; //00010000b
            delay(100); //延时100ms
            LED_P0 = 0x08; //00001000b
            delay(100); //延时100ms
            LED_P0 = 0x04; //00000100b
            delay(100); //延时100ms
            LED_P0 = 0x02; //00000010b
            delay(100); //延时100ms
            LED_P0 = 0x01; //00000001b
            delay(100); //延时100ms
        }
        i++; //i自增
        if(i==LED_COUNT) //当i等于LED数量时，将i重置为0
            i=0;
    }
}

以上是5个51单片机花样流水灯的程序，每个程序都有详细的注释说明，可以更好地理解每行代码的作用和实现方式。