单片机之动态数码管的显示数字1-8

淩亂°似流年 2022-05-11 10:20 220阅读 0赞

C51单片机中的三种方法解决数码管的动态显示，使数码管显示1-8数字。三种方法的代码如下，此时读者需要十分注意你代码中引脚的先后顺序，否则可能达不到预期的效果.

#include<reg51.h>
    #define uchar unsigned char
    #define uint unsigned int
    uchar code seg1[]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80};   //使用的是共阳极数码管
    void delayms(uint i)
    {
      uchar j;
      while(i--)
      for(j=0;j<=125;j++);
    
    }
    void main()
    {
    
      while(1)
      {
       uchar i,j;
       P2=0x80;
       for(i=0;i<8;i++)
    {
      P2=_crol_(P2,1);
      P0=seg1[i];
      delayms(1);
    
    }
    }
    
    }

#include<reg51.h>
    #define uchar unsigned char
    #define uint unsigned int
    uchar code seg1[]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80};   //使用的是共阳极数码管
    uchar code seg2[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
    void delayms(uint i)
    {
    
     uchar j;
     while(i--)
      for(j=0;j<=125;j++);
    
    }
    
    void main()
    {
       while(1)
       {
    
        uchar i;
         for(i=0;i<8;i++)
         {
            P2=seg2[i];
            P0=seg1[i];
            delayms(1);
    
          }
    
    
    }

#include<reg51.h>
    #define uchar unsigned char
    #define uint unsigned int
    //uchar code seg1[]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80};   //使用的是共阳极数码管
    //uchar code seg2[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
    void delayms(uint i)
    {
    
     uchar j;
     while(i--)
      for(j=0;j<=125;j++);
    
    }
    
    void main()
    {
       while(1)
       {
        P2=0x01;
        P0=0xf9;
        delayms(1);
         P2=0x02;
        P0=0xa4;
        delayms(1);
     P2=0x04;
        P0=0xb0;
        delayms(1);
     P2=0x08;
        P0=0x99;
        delayms(1);
     P2=0x10;
        P0=0x92;
        delayms(1);
     P2=0x20;
        P0=0x82;
        delayms(1);
     P2=0x40;
        P0=0xf8;
        delayms(1);
     P2=0x80;
        P0=0x80;
        delayms(1);
       }
    }

仿真图如下：

![70][]

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![20190413174801384.png][]

[70]: /images/20220511/0eb6f005a03a4d949abcfd4964de08b6.png
[20190413174801384.png]: /images/20220511/052ed271f1d543dfab9a602330a8244d.png