Write a program to send 70H to port 0 and 90H to port 3 of 8051

Hi... in this article we will talk about how to send a hexa-decimal value in port 0 and port 3 of 8051 microcontroller and display those values to 7 segment display.

The microcontroller weare using is AT89C51.

This microcontroller consists of  4 communication ports which are also knows as port 0, port 1, port 2 and port 3.

All ports are internally pull-up except the port 0.

To communicate with the port 0 we need to manually pull-up the port 0 with a resistor and a power supply.  

The simulation software I used was proteus and for creating the program hex file I used keil micro vision 5.

In simulation process you need to write the embedded c program and convert it into a hex file with the help of  keil software and upload the code on 8051 microcontroller using the proteus simulator, this entire process will simulate the project like a real hardware project.

Code

#include <reg51.h>

void main()

{

     P0= 0x70;

     P3= 0x90;

}