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[CM] 4-bit calculator from cardboard & marbles

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RS Wood

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Nov 21, 2016, 9:46:37 PM11/21/16
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From the «but is it RPN?» department:
Title: 4-bit calculator made from cardboard and marbles
Author:
Date: Mon, 21 Nov 2016 14:34:14 -0500
Link: https://lapinozz.github.io/learning/2016/11/19/calculator-with-caordboard-and-marbles.html

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Links:
[1]: https://news.ycombinator.com/item?id=13008408 (link)


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