The pickLink checked Oct 9
NandGame
nandgame.comBuild a computer from basic parts in a puzzle game
FreeNo signup
That one website that teaches how a computer works by having you build one
Why it's the pick
NandGame is a free puzzle game where you start with a single relay and build logic gates, memory and finally a working processor, level by level, in the browser. It needs no math beyond addition. Nand2Tetris is the full free university course behind the idea.
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