Digital Code Lock with LCD and Keypad using AT89C2051

A Brief Description:
This project is written in C language. Its a simple project with efficient hacking prevention from Brute Force etc. The basic user lock is of 5 Digits and Master Lock is of 10 digits so its not easy for an intruder to break the lock unless you keep the code simple. User has maximum of 3 retries.. if fails then Master Locks has to be entered which is of 10 digits. So Complete security is there.
The input is taken from a 4x3 Keypad (please see the schematic for more information) and Display the user input on a 2x16 LCD. A pin is assigned as output for activating and deactivating the lock. For demonstration i have connected an LED to that pin.

Please visit download section to download this projects
Tags AT89C2051 Projects4x3 Keypad driverLCD 4-bitAT89C2051 based Digital code lock
printer friendly create pdf of this news item

Submit comment

(Required; Min length 5)
(Required; will not be displayed)

Downloads

Comments

EdwardFew
Mon Mar 18 2024, 01:14 pm
EmeryPah
Mon Mar 18 2024, 11:51 am
RobertMax
Sun Mar 17 2024, 10:22 pm
DanielJar
Fri Mar 15 2024, 06:52 pm
Tuzaimecor
Fri Mar 15 2024, 02:32 am
PromotionFoode
Thu Mar 14 2024, 08:11 pm
EdwardGeawn
Sun Mar 10 2024, 12:24 pm
ZacharyShado
Sat Mar 09 2024, 10:04 am