In this project, we have explained a simple Electronic code lock using 8051 Microcontorller, which can only be unlocked by a predefined code, if we enter the wrong code, the system alerts by siren the buzzer.
Find the circuit diagram and code here: [ Ссылка ]
For more such projects based on 8051 microcontroller, visit: [ Ссылка ]
![](https://s2.save4k.ru/pic/sZiq46BxhUk/maxresdefault.jpg)