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 ...

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 than not, what you’ll find is that everything ...

If you are interested in building your very own RPN calculator you might be interested in a new project published to the Instructables website this week by member Shiura. Using a CNC machine, the ...

Hp is replacing the 32SII with the 33S soon. It should be released next month. I stumbled on it while searching for an NCEES legal RPN calculator to use in place of my 48GX.<BR><BR>Walmart had an ad ...

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 ...