Nibbler
Nibbler is a 4 bit CPU built from standard 7400 series logic chips. Despite using only 17 chips, it can do some interesting tricks. It was designed by Steve Chamberlin (of Big Mess o' Wires Fame) and was originally constructed using the wire-wrap process. This is an updated design that uses a printed circuit board and some component substitutions.
Install / Use
/learn @pong74ls/NibblerREADME
This project is based on an original design by Steve Chamberlin.
For information on how Nibbler works, development history, demonstrations and software downloads, go to:
http://www.bigmessowires.com/nibbler/
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Audited on Feb 16, 2026