C51单片机四位数码管动态显示2020

电路原理图

元件清单

程序（C语言）

#include<reg51.h>

unsigned char smg[]={0x5b,0x3f,0x5b,0x3f};//2020字形码（共阳极）

void delay(unsigned int time);

void main()

{

   unsigned char i,W;

   while(1)

  {

    W=0x01;

    for(i=0;i<4;i++)

{

     P1=W;

W<<=1;

      P0=smg[i];

     delay(10);

  }

}

}

void delay(unsigned int time)

{

   unsigned int j=0;

   for(;time> 0;time--)

   for(j=0;j<125;j++);

}

#include<reg51.h>unsigned char smg[]={0x5b,0x3f,0x5b,0x3f};//2020字形码（共阳极）void delay(unsigned int time);void main(){

   unsigned char i,W;

   while(1)

  {

    W=0x01;

    for(i=0;i<4;i++)

{

     P1=W;

W<<=1;

      P0=smg[i];

     delay(10);

  }

}}void delay(unsigned int time){

   unsigned int j=0;

   for(;time> 0;time--)

   for(j=0;j<125;j++);}