As you may or may not know, one of the first calculators (abacus excluded) was a giant gear-laden monstrosity conceived of computing pioneer Charles Babbage back in the early 1800’s. His “difference engine” used gears to calculate 7th order polynomials to 31 digits of accuracy.
here are a few modern attempts at using his logic to create simpler difference engines out of toys:
This difference engine is made of legos. Speaking of computing pioneers, you may recognize the name of the guy providing the web hosting for this site — one Steve Wozniak (who worked on the original Apple computers).
This difference engine is made of Meccano (similar to Erector set)
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