Moravia (the current owner of the HP calculator IP) has announced they'll be making a Collector's Edition of the 16C RPN programmer's calculator next year:

https://youtu.be/vwgQu2s7rxY?t=1185

HP made dozens of scientific and business calculators over the years, but they only ever made one programmer's calculator, so I don't expect this one to stick around for very long.

#hpcalc #rpn

Free42, the Free Software re-implementation of the classic HP 42s RPN calculator, supports using custom skins, a bit like WinAmp skins but more complex - instead of just a bunch of bitmaps, you get to define the size and location of each button and graphical element.

I have discovered that it its parsing of the layout file is not very strict, so I can wrap some HTML, CSS, and JavaScript around it and get a polyglot file that I can load into Free42 to test, and also load into a browser to visualise the coordinates as I edit them.

(the attached screenshot depicts a skin for Free42's slightly more capable cousin Plus42, but the skin files are interchangeable)

#free42 #hp42s #hpcalc

I took a chance on a nice-looking HP 19BII on eBay that was listed as untested. It was quite cheap and worst case it’d be a really cool display piece.

I got some N-cell batteries and very carefully installed them.

Nothing happened at first when I hit “ON”. Just as I resigned myself to it being a dud, I heard a beep and the display came to life!

There’s a lot to explore on here and it’s going to be a fantastic companion to my 17BII.

#VintageElectronics #hpcalc #VintageCalculator

HP1973 project brings the HP-45 back to life, not only with full emulation, but showing the ROM workings under the hood.

Beautiful.

#hpcalc

https://hackaday.com/2023/07/24/hp1973-project-highlights-workings-of-hp-45-calculator/

Acquired: HP 50g Graphing Calculator
Balance -103 EUR (w/VAT)

#hpcalc