HHC 2025 Videos
The talks from the HHC 2025 conference in Orlando, Florida are starting to be up on hpcalc’s YouTube page within the coming days.
https://www.youtube.com/@hpcalc/videos
So far, the following videos are up (as of 5:30 AM Pacific Standard Time on October 14):
Is the HP 71B Still Relevant?: Wlodek Mier-Jerdzejowicz. Yes and Wlodek explains why.
The RPN Journey Continues – Gary Carter: This is about the new and upcoming C47 and R47 calculators. The C47 is an advanced, open-source RPN calculator that runs on the Swiss Micros DM42 and DM42n calculator. The R47 will be hardware version.
For more information: https://47calc.com/
Moravia Product Update. Moravia is a worldwide distributor and has the license to sell HP calculators. There are plans to release an HP 16C Collector’s Edition next year.
https://www.youtube.com/watch?v=vwgQu2s7rxY
The HP 16C is part of the Voyager series, which includes the HP 12C and HP 15C, but the 16C specializes in computer science and Boolean algebra.
https://www.hpmuseum.org/hp16.htm
There is more to come. You can see the full schedule here:
https://hhuc.us/2025/schedule.htm
Topics to come include (not an all inclusive list):
Video Game Preservation and how it relates to calculators: Charles McCord
Creating the Calculator Calculus Companion book: David Hayden
A copy can be downloaded here: https://literature.hpcalc.org/items/2685
Building a Classic Battery pack from scratch: David Ramsey
Photographing Calculators on a budget: Alan Striegel
A New Random Number Generator (using dice): Richard Schwartz
HHC is one of the events I try to get to every year. It is a two, talk and calculating packed days. Saturdays typically start at 7:30 in the morning local time and we go to at least 9:30 at night, sometimes later. Sundays start about 9:30 in the morning through about 4:00-5:00, counting the door prize drawing. The weekend goes by so fast!
[edited October 18, 2025]
Eddie
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