• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Simple HND project

Not open for further replies.

I have just started with my project, i am trying to send a code from a keypad across infra red to a 7 segment display and and maybe open a lock if the right code is entered.

Anyway the problem is i have a keypad (connected 4x3 format) and want to hook it up to a pld that i can program, however am not sure how to power the keypad without applying a logic 1 to the pld.

Can anyone give me some advice on how to do this please.
Not open for further replies.

Latest threads

EE World Online Articles