Collaborate Disseminate
In the era of the smartphone, an electronic calculator may seem a bit old-hat. But they continue to hold a fascination in our community, both when used for their original …read more Continue reading Classic Calculator Goes RPN, With New Brain
HP calculators, slide rules, and Forth all have something in common: reverse polish notation or RPN. Admittedly, slide rules don’t really have RPN, but you work problems on them the …read more Continue reading In Praise of RPN (with Python or C)
The Great Automotive AM Radio War of 2023 rages on, with the news this week that Ford has capitulated, at least for now. You’ll recall that the opening salvo came …read more Continue reading Hackaday Links: May 28, 2023
As the smartphone has eaten ever more of the gatgets with which we once surrounded ourselves, it’s with some sadness that we note the calculator becoming a less common sight. …read more Continue reading A Reverse Polish Calculator For Your Keychain
How many of us have an everyday tool that’s truly unique? Likely not many of us; take a look around your desk and turn out your pockets, but more often …read more Continue reading Walnut Case Sets This Custom Arduino-Powered RPN Calculator Apart from the Crowd
Say what you want about Soviet technology, but you’ve got to admit there was a certain style to Cold War-era electronics. Things were perhaps not as streamlined and sleek as …read more Continue reading Soviet Scientific Calculator Gives Up Its Cold War-Era Secrets
Why reach for a bland, commercially available calculator when you be using a model that employs RPN (Reverse Polish Notation) in its calculations and be a custom build all at …read more Continue reading An Open-source Scientific RPN Calculator
[Mitsuru Yamada] states that one of the goals for this 6502 computer build was to make it strong enough to survive real-world usage. In that regard alone we’d call this a success; the die-cast aluminum enclosures used a little blast from the past and lend a nice retro industrial look …read more
Continue reading Another Kind of “Bare Metal”: 6502 Computer Powers RPN Calculator
See if you can talk your local school district into buying a computer that costs about $5,000 and weighs 40 pounds. That was HP’s proposition to schools back in 1968 so really it is more like $35,000 today. The calculator had a CRT display for the RPN stack that you …read more
Continue reading Retrotechtacular: The $5,000 40 Pound HP Classroom Computer
Let’s be clear right up front: there are probably more obvious solutions to the problem of using a Russian calculator when you don’t speak Russian than printing new keys and engraving translated markings on them. But easy solutions are boring and generally considered beyond the scope of Hackaday articles, so …read more
Continue reading 3D-Printer and CNC Make This Russian Calculator Bilingual