本文共 2172 字，大约阅读时间需要 7 分钟。

一.点亮第一个LED

#include 
   
    sbit D1 = P1^0;//表示P1端的第一个接口void main(){    D1 = 0;}
   

二.点亮全部LED

#include 
   
    void main(){    P1 = 0x00;//在单片机上LED灯是从下往上读的八个二进制数    //故可以用十六进制数来对这八个二进制数进行操作}
   

三.点亮流水灯

#include 
   
    #include 
    
     #define uint unsigned int void delay();void main(){    uint D;    D = 0xfe;    P1 = D;    while(1)    {        delay();        D = _crol_(D,1);//函数_crol-()为单片机里面的循环左移函数                        //函数_cror_()为单片机里面的循环右移函数        P1 = D;    }}void delay(){    int i;    i = 50000;    while(i--);    i = 50000;    while(i--);}
    
   

四.在“三” 条件下让蜂鸣器随灯亮而响

#include 
   
    #include 
    
     #define uint unsigned int sbit deep = P2^3;void delay();void main(){    uint D;    D = 0xfe;    P1 = D;    deep = 0;    while(1)    {        delay();        D = _crol_(D,1);        P1 = D;        deep = 0;    }}void delay(){    int i;    i = 50000;    while(i--);    i = 50000;    while(i--);    i = 20000;    while(i--)    deep = 1;}
    
   

五.让LED依次亮下来然后又倒序亮回去

#include 
   
    #include 
    
     #define uint unsigned int sbit deep = P2^3;void delay(){    uint i;    i = 50000;    while(i--);    i = 50000;    while(i--);    i = 20000;    while(i--)    deep = 1;}void main(){    uint i,D;    D = 0xfe;    P1 = D;    deep = 0;    while(1)    {        i = 7;        while(i--)        {            delay();            P1 = 0xff;            delay();            deep = 0;            D = _crol_(D,1);            P1 = D;        }        i = 7;        while(i--)        {            delay();            P1 = 0xff;            delay();            deep = 0;            D = _cror_(D,1);            P1 = D;        }    }}
    
   

五.累加式的点亮LED

#include 
   
    #include 
    
     void delay(){    int i;    i = 50000;    while(i--);    i = 20000;    while(i--);}void main(){    int D,i,j;    while(1)    {        i=1;        while(i<=8)        {            D = 0xfe;            P1 = D;            delay();            P1 = 0xff;            j = i;            while(j--)            {                delay();                D = _crol_(D,1);                P1 = 0xff;                delay();                P1 = D;            }            D = 0XFE;            i++;        }    }}
    
   

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