If you like Nixie tubes and/or DIY calculators, checkout this interesting talk from the HP Handheld Conference in Orlando last month by [Eric Smith] from Brouhaha and [John Doran] from Time ...
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The mystery of the rogue HP calculator: 12C or not 12C? That is the questionFor most of us, a calculator might ... somewhere between the HP-70 of 1974 (1.2!) and the HP-22 of 1975 (9), but far off the ...
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