The HP-35 scientific calculator managed to replace the slide rule almost overnight, using a legendary combination of form and function. The HP-35 scientific calculator managed to replace the slide ...

Gov. Gavin Newsom signs SB 243, the first US law setting child-safety rules for AI chatbots, from crisis redirects to transparency requirements. Hollywood pushes back against OpenAI’s Sora 2 as ...

The early HP Reverse Polish Notation calculators have a special place in the hearts of engineers and tinkerers as there are lots of projects involving them. They haven’t been produced in decades, but ...

Editor’s note: Also see Ken Coffman’s blog: The HP15C returns as an iPhone app. With the emergence of hand-sized computers, calculators have lost some of their former prominence, yet they continue to ...

If you like Nixie tubes and/or DIY calculators, checkout this interesting talk from the HP Handheld Conference in Orlando last month by [Eric Smith] from Brouhaha and [John Doran] from Time Fracture.