Taking a look at the Sanyo ICC-82D, aka the Dictaphone 1680. The smallest portable electronic calculator with built-in display on the market in 1971! And one of the first hand-holdable battery powered calculators, period. It wasn't cheap either, costing $495 in '71 – roughly $3500 with inflation!
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![Radius Pivot: The Rotating CRT Monitor from 1991 [LGR Oddware]](http://i.ytimg.com/vi/mpayqVGmKyo/default.jpg "Radius Pivot: The Rotating CRT Monitor from 1991 [LGR Oddware]")
