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by Lerc 90 days ago
The Gigatron uses 5 chips for a 4bit ALU.

It's one of the test layouts that I put in this perfboard layout program that I ened up making because trying to figure out wiring on both sides at once in my head melted my brain.

https://fingswotidun.com/PerfBoard/ (Try the 4-bit ALU example)

Of course I haven't yet verified it works because of getting sidetracked by the editor, https://xkcd.com/974/