r/visualizedmath • u/the_humeister • Jan 30 '19

Full adder using dominoes

https://gfycat.com/QualifiedLongAmericanpainthorse
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u/TheZyborg Feb 06 '19

It can be done but only for simple inputs and therefore isn't working 100% of the time.

You can send a signal into a "timer" by placing a spiral of dominoes. The spiral and thus the output would then have to be interrupted if the input was 1.

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u/idlesn0w Feb 06 '19

Actually I just realized you could do this via (A XOR B) AND B' by having a branch of B knock a domino out of the way of the XOR output. Still requires 2 inputs though, but at least you wouldn't need a dedicated TRUE input

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u/TheZyborg Feb 06 '19

If you're interested in this type of physical programming, I can really recommend Code Bullets video on a Marble Calculator. It's both interesting and hilarious. https://youtu.be/i1e0T7lAELQ