Marble Adding Machine

Reading Time: 1 minute

Marble Adder-1Marble Adder-1

A marble adding machine seems just about right for a geekdad project. It’s made from wood and marbles. It uses binary counting and elemental flip flop gates for logic. It’s a very simple “computer.” The instructions for building one have been cooked up by Matthias Wandel and posted on his website Woodgears. Watch this cool video to see what it can do.

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