Museum of Pocket Calculating Devices
ohjeez
78 points
17 comments
May 21, 2026
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Discussion Highlights (10 comments)
lapetitejort
My dream is to one day own a Curta. I want to find an algorithm to approximate pi, one crank at a time. I had a chance to hold one at a vintage computer festival once. Smaller than I expected. Truly pocketable. I just had a thought. Why hasn't a Curta simulator come out for the Playdate? I guess I am cursed with creating it
cestith
I have a few pocket computers not on that page. I guess I have a new option where to donate them if I ever decide to part with them.
idatum
I have 2 listed: HP-35 and HP-41CX. Still use an HP-11c. Will die on that hill defending RPN!
zvr
As the old joke goes: "For your birthday, I wanted to get you a pocket calculator ... but then I thought you'd already know how many pockets you have."
NetMageSCW
I was really looking for watch calculators.
gregsadetsky
See also https://vcalc.net/
asdefghyk
As someone whoose first calculator was a basic Sharp (I think) 4 function model in 1975 - I admired the scientific calculators that others could afford, at that time. This site bought back memories of the early era calculators.
maxy_etc
this is the way websites should feel
TacticalCoder
We had HP ones at school, lots of fun in math classes... But then I still have my Casio FX-850P, which I probably own since 1989 or something. Last time I put batteries in it (5 years ago?) it was still working. It's in TFA : ) https://en.wikipedia.org/wiki/Casio_FX-850P It's on my desk, always visible. Next to an Atari Portfolio (the same one young John Connor uses to hack doors in Terminator 2) and a totally beaten up ZX Spectrum. Remnants of a glorious past.
ofrzeta
So the guy in Solingen/Germany (Gerhard Wenzel) is real and owns this collection but the museum is strictly online https://www.techbook.de/mobile-lifestyle/taschenrechner-samm...