Found a second #HP12C while out thrift shopping, a later model made in Singapore. I keep hunting for one of the older scientific models with the molded rather than painted keys, but still fun to find another. The top one is today's find, a '93 from Singapore, the bottom an '86 from the U.S. #AlwaysBeThrifting

YAY! Successfully upgraded my > 10 years old HP-12C's firmware to the new 2025 version which now allows to dump and restore the calculator’s memory via cable to/from my Mac. 😊 #calculator #hpcalculator #hp12c #firmware #hewlettpackard – To see your HP-12C’s firmware version: When the calc is off hold g & ENTER and press ON. Then press 2 to see the checksum, press any key to see the date, again any key to see a copyright notice, again a key to return to the 1.L 2.C 3.H menu. Press ON to exit. 😉

Meh… my RPN calculators never had a C button (that was used like that) either. https://www.theatlantic.com/technology/archive/2024/10/iphone-broke-its-calculator/680271/ #hp12c #hp11c #hp15c #hp16c