digital code lock using ic 4013

[jaseela123d]

The code lock circuit described here can be installed in cabinets, almirah or closet in homes and offices to protect your important documents or jewelry box. In this box it can only be opened when the correct code is pressed. The advantage of this circuit-

● If a wrong sequence is pressed, it will automatically restart the entire circuit.

● Only the authorized person can open the cabinet.

● The circuit is based on a unique IC which is CD4013

● You can also install this code lock on the car so that the car only starts when you press the correct code sequence.

● We used the power switch to press also can use number keypad available in the market. This will increase the complexity of the circuit.

It can be understood in the following video: