Yeah, rope memory is genius. Practical storage from such as simple structure. There's a demo somewhere on Youtube of someone who made a 7-segment decoder with

Yeah, rope memory is genius. Practical storage from such as simple structure. There's a demo somewhere on Youtube of someone who made a 7-segment decoder with rope. Pretty simple circuit compared to what you need to read-write core memory. If you like this kind of things, you might want to check out the amazing ROM implementation of the HP 9100: https://www.hpmuseum.org/tech9100.htm https://www.hpmuseum.org/tech9100.htm