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What's your favorite calculator?

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RAPo:
If I must choose only one: HP41CX with math/stat module (my first love from math university and in use since 1981).

But I have all of the " 10C series: Compact yet Sophisticated Calculators (1981)"  as presented in https://hpmuseum.org/, an HP prime, an HP42s and the DM41X from swissmicro's.

RPN/RPL has been ingrained into my system (both memory and muscles), I cannot use a non-RPN calculator without great difficulty.

Sal Ammoniac:
My favorite calculator is my 40 year old HP41CX, although I rarely use it now as I have an iPhone app that looks and works just like the real thing, only much faster.

jasonRF:
The last handheld calculator I bought was an HP 32S, 25ish years ago.   I needed it to replace the identical model that was stolen.  So it is my favorite by default.  I do not use calculators for graphing or programming, so even simpler RPNs would be fine.   These days I mostly use the Free42 app on my Iphone, which basically emulates the HP 42S.  That way I don’t need to purchase button-cell batteries, although I do miss the tactile buttons. 

Jason

jasonRF:

--- Quote from: RAPo on October 19, 2022, 03:32:05 pm ---RPN/RPL has been ingrained into my system (both memory and muscles), I cannot use a non-RPN calculator without great difficulty.

--- End quote ---
Me too.  Last year I was doing field testing for work and forgot my calculator.   Tried using the default app on my phone and just could not use it for anything.   Fortunately a younger colleague was with me who was fluent in “normal calculator” so he was stuck doing the quick-and-dirty sanity check calculations.  It made me nervous, but I still did pencil-and-paper order of magnitude checks and looked like a dinosaur.  Soon after I found the Free42 app for my phone so that problem never happens again.   

MikeK:
Too bad the favorite calcs are out of production and too pricey on the used market.

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