Aww, I used to have one of these — a Little Professor. Used to be much better at mental arithmetic as a kid :) http://www.ebay.co.uk/itm/Retro-Texas-Instrumeents-1978-Little-Professor-in-Good-Working-Order-/111200460122?pt=UK_VintageComputing_RL&hash=item19e4105d5a …
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@aral Yeah, I think mine is from mid-80s something. I remember I used it very much, but I found division hard to learn.Thanks. Twitter will use this to make your timeline better. UndoUndo
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