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Babbage Difference Engine made with LEGO

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Published on Jul 8, 2010

This is a working hand cranked Babbage Difference Engine made using LEGO parts. It can evaluate any polynomial of the form aX^2 + bX + c for X:0 through N with answers to 3 digits.

For this video the machine is set to calculate the squares of the integers. The video shows the computation from X=2 through 8. It will output 4, 9, 16, 25, 36, 49, and 64.

See other mechanical devices I've built at: http://acarol.woz.org

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