🇺🇦 haxadecimal 🚫👑Jul 19, 2025
NP34 calculator made by Chris Chung, based on my Nonpareil microcode-level simulator for HP calculators, showing sin(60⁰)
https://www.hpmuseum.org/forum/thread-23764.html
#rpn #rpncalculator #rpncalculators #RPNcalc
Show threadMichael OrmsbyMay 24, 2025

At this point I have three HP-41s in various stages…

“Nutella” is fully functional.

“Haffnut” is non-functional but I think I know what I have to do. Here I have a picture of the battery + module block restoration in progress. The part of the keypad PCB that contacts the battery block needs thorough scrubbing w/ DeOxit.

“Frankie” is on life support in a medically induced coma. Not sure if he’s gonna make it.

#HP41 #RPN #RPNcalculators

ca_honeyFeb 4, 2024
still in use 2024
#permacomputing
#rpncalculators
Søren KjærsgaardNov 5, 2023
Someone had a really nice collection of HP calculators at the #hamradio fair 🥰🥰 I’m a bit of a HP fan myself but my collection is nowhere like this! 🤷🏼‍♂️😂 #hpcalc #hpcalculuators #rpnftw #RPNcalc #rpncalculators
podfeetAug 5, 2023

Successful eventing I’d say.

#RPNcalculators #HPcalculuators #bourbon #wine #VintageCalculator #HP11 #HP11 #HP15 #HP41 @spsheridan @Phasenoise