How to make password based door lock system project using assembly language 8051

Hello everyone!!!!

I have recently been working on 8051 micro controller. the 8051 micro controller is a very versatile controller to be programmed and implemented at various levels.

In this blog we will discuss about the 8051 micro controller password based door lock system using assembly language.

LET US START MAKING THE PROJECT "PASSWORD BASED DOOR LOCK SYSTEM" 

STEP 1: SIMULATE PROJECT ON A SOFTWARE: 

Showing below is the circuit diagram of "Password based door lock system" simulated on proteus 7

PARTS USED:

1) AT89C51 (micro controller)

2) 4*4 hexpad (for input)

3) MM74C922 (key decoder)

4) L293D ('H' drive IC)

5) Motor

6) Not gate

7) lM016l (LCD)

Simulation is not a very hard thing to do!!! just connect the wires as shown in the diagram the wires with 'blue' 'brown' and 'red' color represents the 'buses'. the bus connects the wires that are labeled same on different ports. 

STEP 2: PROGRAMMING!!

The most important step is the programming... For this you will need some knowledge of 8051 micro controller.

• Let us start with the programming of  LCD:

In order to interface LCD please click on the link below:

LCD INTERFACING WITH 8051

• How to interface keypad?

In order to interface keypad please click on the link below:

KEYPAD interfacing with 8051

IF ANYONE IS INTERESTED IN FULL CODING OF THIS PROJECT CAN CONTECT US ON THIS BLOG OR ON OUR EMAIL ID 

               MECHASOFT0@GMAIL.COM