Electronic code lock with multiple user ID and password system using 8051 microcontroller, which provides control to unlock the lock or door. It uses embedded system with input from the keypad and the ...

Electronic code lock with multiple user ID and password system using 8051 microcontroller, which provides control to unlock the lock or door. It uses embedded system with input from the keypad and the ...

The main principle of this circuit is that the door lock opens only when the buttons in series are pressed at a time. We can use it to lock the doors and for other security purposes. This article ...

Here is the circuit diagram of Electronic code lock system using 8051 microcontroller. It is very useful at residential places to ensure better safety. This system demonstrates a circuit named ...

The electronic code lock described is straightforward to build and may be used for a multitude of purposes. All components used are readily available from most electronics retailers. The code consists ...

Abstract: People's quality of life needs to be improved, and the anti-theft risk needs to be paid more attention. Therefore, a simple electronic lock is becoming more and more important. The system ...