Stephen Ball @sdball.dev · Nov 3 Academically I knew that computers are built up from logic gates. But somehow I never internalized that correspondingly everything is built out of truth tables. The fact that this chip is the "dabble" part of the double dabble algorithm seems like cheating.
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That bit of wiring passes through numbers that are 4 or less unchanged and otherwise adds 3. But there's no adding! The logic gates are just mapping out a truth table of how the inputs and outputs should correspond.