Re^2: My favorite model of computation is ...

A simple technique I picked up somewhere permits counting to 99 on the hands -- left hand is the tens digit, right hand is the units digit, and the thumb counts for 5 fingers.

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Re^3: My favorite model of computation is ... by SuicideJunkie (Vicar) on Jun 14, 2017 at 21:35 UTC
This is my system too. It also works very well for tallying two different counts that occur simultaneously, if they're in the range of 0-9. Or in a pinch, -9-+9 or 0-19, using memory (short term) or hand inversion (long terms storage) for the extra bit.	[reply]