Pocket Calculator

GO-21 SciRPN closely simulates the venerable HP-21 Pocket Scientific Calculator. The HP-21 was released in 1975 and sold for a MSRP of $125. Virtually indistinguishable from the real item in operation, GO-21 is a powerful yet simple retro calculator.


Universal Purchase: runs on iPod touch, iPhone, iPad, Macintosh, Apple TV


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GO-21 - a short history in pictures >

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