arduino 8段数码管,arduino 8段数码管

旧城等待， 2022-08-26 11:06 190阅读 0赞

arduino 8段数码管,arduino 8段数码管,arduino 8段数码管

arduino例子，今天学习数码管：

线连接图：

![65c8af13-9b83-3532-b143-f8f8c567148b.jpg][]

显示的效果是数字从1 到8 ，每间隔2秒换一次

代码如下：

//设置控制各段的数字IO脚，具体几号引脚对应哪一段，来源为数码管官方引脚图。
    int a=7;
    int b=6;
    int c=5;
    int d=11;
    int e=10;
    int f=8;
    int g=9;
    int dp=4;
    //显示数字1
    void digital_1(void){
      digitalWrite(c,LOW);//给数字5引脚低电平，点亮c段
      digitalWrite(b,LOW);//点亮b段
      //熄灭其余段
      for(int j=7;j<=11;j++){
        digitalWrite(j,HIGH);
      }
      digitalWrite(dp,HIGH);//熄灭小数点DP段
    }
    //显示数字2
    void digital_2(void){
      digitalWrite(b,LOW);
      digitalWrite(a,LOW);
      for(int j=9;j<=11;j++){
        digitalWrite(j,LOW);
      }
      digitalWrite(dp,HIGH);
      digitalWrite(c,HIGH);
      digitalWrite(f,HIGH);
    }
    //显示数字3
    void digital_3(void){
      digitalWrite(g,LOW);
      digitalWrite(d,LOW);
      for(int j=5;j<=7;j++){
        digitalWrite(j,LOW);
      }
      digitalWrite(dp,HIGH);
      digitalWrite(f,HIGH);
      digitalWrite(e,HIGH);
    }
    //显示数字4
    void digital_4(void){
      digitalWrite(c,LOW);
      digitalWrite(b,LOW);
      digitalWrite(f,LOW);
      digitalWrite(g,LOW);
      digitalWrite(dp,HIGH);
      digitalWrite(a,HIGH);
      digitalWrite(e,HIGH);
      digitalWrite(d,HIGH);   
    }
    //显示数字5
    void digital_5(void){
      for(int j=7;j<=9;j++){
        digitalWrite(j,LOW);
      }
      digitalWrite(c,LOW);
      digitalWrite(d,LOW);
      digitalWrite(dp,HIGH);
      digitalWrite(b,HIGH);
      digitalWrite(e,HIGH); 
    }
    //显示数字6
    void digital_6(void){
      for(int j=7;j<=11;j++){
        digitalWrite(j,LOW);
      }
      digitalWrite(c,LOW);
      digitalWrite(dp,HIGH);
      digitalWrite(b,HIGH);   
    }
    //显示数字7
    void digital_7(void){
      int  j;
      for(j=5;j<=7;j++){
        digitalWrite(j,LOW);
      }
      digitalWrite(dp,HIGH);{
      for(j=8;j<=11;j++)
        digitalWrite(j,HIGH);
      }
    }
    //显示数字8
    void digital_8(){
      for(int j=5;j<=11;j++){
        digitalWrite(j,LOW);
      }
      digitalWrite(dp,HIGH);
    }
     
    //显示dian
    void digital_dian(void){
      digitalWrite(dp,LOW);
    }
    void setup(){
      for(int i=4;i<=11;i++)
        pinMode(i,OUTPUT);//设置4～11引脚为输出模式
    }
    void loop(){  
        digital_1();//数字1
        delay(2000);//延时2s
        digital_2();
        delay(2000);
        digital_3();
        delay(2000);
        digital_4();
        delay(2000);
        digital_5();
        delay(2000);
        digital_6();
        delay(2000);
        digital_7();
        delay(2000);
        digital_8();
        delay(2000);   
        digital_dian();
        delay(2000);
    }

，最终效果如下图显示：

![feb37797-a3d2-3d8b-a2cd-9d0d2af93233.jpg][]

*  [![点击查看原始大小图片][a062d421-81ec-3bc5-b691-50579e1f6203-thumb.jpg]][a062d421-81ec-3bc5-b691-50579e1f6203-thumb.jpg 1]
 *  大小: 1.3 MB

*  [![点击查看原始大小图片][65c8af13-9b83-3532-b143-f8f8c567148b-thumb.jpg]][65c8af13-9b83-3532-b143-f8f8c567148b-thumb.jpg 1]
 *  大小: 121.6 KB

*  [![点击查看原始大小图片][feb37797-a3d2-3d8b-a2cd-9d0d2af93233-thumb.jpg]][feb37797-a3d2-3d8b-a2cd-9d0d2af93233-thumb.jpg 1]
 *  大小: 55.4 KB

*  查看图片附件

[65c8af13-9b83-3532-b143-f8f8c567148b.jpg]: /images/20220824/dce563dba2664078b44cdb2f27bee520.png
[feb37797-a3d2-3d8b-a2cd-9d0d2af93233.jpg]: /images/20220824/ae7aad293d6b45da9dd8d536433780f5.png
[a062d421-81ec-3bc5-b691-50579e1f6203-thumb.jpg]: http://dl2.iteye.com/upload/attachment/0062/7971/a062d421-81ec-3bc5-b691-50579e1f6203-thumb.jpg
[a062d421-81ec-3bc5-b691-50579e1f6203-thumb.jpg 1]: /images/20220824/5283188231ff49389264a1cee56d737b.png
[65c8af13-9b83-3532-b143-f8f8c567148b-thumb.jpg]: http://dl2.iteye.com/upload/attachment/0062/8485/65c8af13-9b83-3532-b143-f8f8c567148b-thumb.jpg
[65c8af13-9b83-3532-b143-f8f8c567148b-thumb.jpg 1]: /images/20220824/33c59d8b24f44fb9a509710fabf90d5e.png
[feb37797-a3d2-3d8b-a2cd-9d0d2af93233-thumb.jpg]: http://dl2.iteye.com/upload/attachment/0062/8491/feb37797-a3d2-3d8b-a2cd-9d0d2af93233-thumb.jpg
[feb37797-a3d2-3d8b-a2cd-9d0d2af93233-thumb.jpg 1]: /images/20220824/cbd3cb4f34d84c48ba8e17f6e6bf2763.png