Author(s)

Hanyue Wang

Corresponding Author

Hanyue Wang

ABSTRACT

Locks are commonly used in people's lives. We use the electronic devices to design a code lock. When the correct code is entered, the unlock signal is output to push the actuator action. That the red light is on and the green light is out means the lock is locked. That the green light is on and the red light is out means the lock is open. The red light is on and the buzzer makes a sound indicate the timeout of your unlock action.In the lock control circuit, a modifiable 8421bcd code is stored as a password. When the input code and the lock's preset password are the same, the lock is opened.If the lock is not opened within 5 seconds of the first password input, the circuit enters a self-locking state so that it can no longer be opened and the luminous probe sends out a 10-second warning. The whole system has a reset function.

KEYWORDS

Lock, electronic code, circuit design