482 Digital Door Lock
482 : Digital Door Lock
- Author: Rameshwar
- Description: Digital door lock system using password verification.
- GitHub repository
- Open in 3D viewer
- Clock: 0 Hz
How it works
This project implements a simple Digital Door Lock System.
The user enters a 4-bit password through the input pins.
Stored Password: 1010
Operation:
- If the entered password matches 1010, the lock is unlocked.
- If the entered password is incorrect, an error signal is generated and the lock remains locked.
Modules Used:
-
password_checker
- Compares entered password with stored password.
- Generates match signal.
-
lock_controller
- Controls unlock and error outputs based on match signal.
-
digital_door_lock
- Top module integrating all submodules.
How to test
Test Case 1: Input Password = 1010 Expected Output: unlock = 1 error = 0
Test Case 2: Input Password = 1111 Expected Output: unlock = 0 error = 1
Testbench file: test/tb.v
Simulation: iverilog -o sim src/project.v test/tb.v vvp sim
External hardware
No external hardware is required.
Inputs:
- 4-bit password
Outputs:
- unlock signal
- error signal
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | Password bit 0 | Unlock | |
| 1 | Password bit 1 | Error | |
| 2 | Password bit 2 | ||
| 3 | Password bit 3 | ||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 |