EDN

Building a 4-Bit Computer: Relay-Based Hardware Accelerators

As you may recall, one of my current hobby projects involves “Building a 4-Bit Computer from the Ground Up.” I’m working on this project with my chum Joe Farr, who is based in the U.K. In the fullness ...
Hackaday

Electromagnetic Field: TIM, A Relay Computer

We are probably all familiar with computing history to the extent that we know the earliest computers were surprisingly simple devices. While early electronic machines such as Colossus or ENIAC were ...
EDN

Building a Relay Computer (Part I): The Y switch

This mini-series of articles describes how to build a computer’s CPU (central processing unit) out of relays. “Y” in English sounds like “guay” in Spanish (my mother tongue), a colloquial expression ...
Hackaday

Relay Computer Consumes Six Years And 4.5 Suitcases

If you thought your home-brew project was taking a long time, [Jeroen Brinkman]’s MERCIA Relay Computer project probably has you beat. He began working on this impressive computer back in 2014, and ...