Before today, we probably would have said that scratch-built relay ... but that they can help communicate how core computing concepts can be implemented with a bundle of wires and switches.

When we think of relays, we tend to think of those big mechanical things that make a satisfying ‘click’ when activated. As nice as they are for relay-based computers, there are times when you ...

Frame relay switches interconnect via point-to-point lines or an ATM backbone. Frame relay provides Permanent Virtual Circuits (PVCs) and Switched Virtual Circuits (SVCs). They are logical ...