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This block gives the entered code signals to the microcontroller.
Password based door lock system block diagram. After extending the unlocking process for a fixed period of time the relay energizes and then the door gets locked again. In this password based door locking system project a keypad is arranged to open and close the door. We are going to use a microcontroller of 8051 family. Traditional lock systems using mechanical lock and key mechanism are being replaced by new advanced techniques of locking system.
This is the cpu central processing unit of our project. The keypad is an input device that helps to enter a code to open the door. The various functions of microcontroller are like. If any unauthorized person enters a wrong password in an attempt to open the door then this system immediately switches a buzzer.
Block diagram of password based door locking system a. After entering a password if it matches with the stored one then the door will unlock for a limited period of time. Reading the digital input from keypad. Password based door lock system using 8051 microcontroller is a simple project where a secure password will act as a door unlocking system.
If the password is wrong then door would remain l ock ed enyi. If another person arrives it will ask to enter the password again.
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