Building an Electronic Key by IC
This project is part of Digital Logic, 2556
This project occur from the proposition that using IC to buide electonic devices. So, my group decide to buide a key electronic. The principle is. First step we have to set password to key by 4 numbers (1-9). After that you can change mode to user, and then you type 4 number to login if your 4 numbers input same as the password in key, the power will blink
This project have problem because we use photobroads to connect circuit. Which makes the wires to break or switch to.
The operation of this device you can watch in this link: