Handpicked Software

rpnCalc is a reverse polish notation (RPN) calculator. The stack behavior is based, rather loosely, on the HP-28S. I originally wrote it because the battery on my HP-28S died and I needed a calculator. Yes, I suppose I could have bought a new battery. But instead I wrote an HTML/Javascript/CSS RPN calculator; partly out of need, and partly as an exercise in Javascript.

What’s New:
Version 1.6.1:

• Fixed a bug whereby if a HEX value contained a single ‘E’ and no other non-numeric characters, it was being converted to a exponential number.

Developer’s website: Rick Lansky