C code for interfacing 7 segment display

Code for interfacing 7-Segment in 8051 and keil

In this lesson I will discuss about how to code to interface 7-segment in 8051 in c language.

Here I have used common anode 7-segment display.

The code is…………

//////////////////////////////////////////////////////////////////////////////////////////////////////////////

//Seven segment display//

#include <REGX51.H>

#define seg P1

code char digit[11]={0xC0,0xF9,0xA4,0xB0,0x99,0x92,0x82,0xf8,0x80,0x90} ;

void delay_ms(int milisec)

{

   int i,j,k;

        for(j=0;j<milisec;j++)

        {

      for(k=0;k<20;k++)   

        {               

                  for(i=0;i<4898;i++);

                 }

        }

}

void main(void)

{

        int i;

        P1=0x00;

        while(1)

        {

                for(i=0;i<10;i++);

                {

                        P1=digit[i];

                        delay_ms(1000);

                }

        }

}

//////////////////////////////////////////////////////////////////////////////////////////////////////////////

By this code 7 segment will display 0 1 2 3 4 5 6 7 8 9 0 1…..for a continuas manner.

 Connect all pin of 7 segment to port one (P1).