Traditional locking system with mechanical lock and key mechanism is replaced with new best practices locking system. These methods âvlâûtsâan the integration of mechanical and electronic devices, and very smart. One of the characteristics of these innovative locking systems is their simplicity and high efficiency. This automatic locking system consists of an electronic control Assembly, which controls the load on the output through a password. The output load can byt′a motor ilia lamp or any other mechanical/electrical load. Here we develop the system of electronic coded lock using 8051 microcontroller, which provides the upravleniethe bring the load. This is a simple login system with integrated keyboard and output appear respectively. This system demonstrates the password locking system on the basis of which the correct code or password is entered, the door opens and the interested person has access to the protected area. Again, if another person comes he will prompt you to enter a password. If the password is wrong, the door will remain closed, denying access to the man.