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hRPNCalc msi

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v1.0.1.0

Windows Installer (all CPU)

hRPNCalc cab

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v1.0.1.0

Windows Mobile Installer

hRPNCalc is an open-sourced free Reverse Polish Notation (RPN, a.k.a. Postfix Notation) calculator application that runs on Windows Desktop and Windows Mobile. The advantage of RPN is that you can get rid of parentheses, without sacrificing the order of execution. This software also comes with an Undo button which is so handy when used in PDA.

Although the RPN input method is easy to learn, it is still significant different from the traditional input method. I highly recommended you to refer to the tutorial if you are new to this.

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A year ago I was looking for a calculator software replacement for my Windows Mobile, and finally ended up at some random Reverse Polish Notation (RPN) style calculator software. I didn’t know the existence of RPN before that, not even at the time of downloading, but I love it once get used to it. (At some points it’s because of the UI. The builtin one is just unacceptable)

After upgrade my Phone, I’ve lost the software and never found it on the Net. Not even a free RPN’s software. It’s about time to Ctrl-N!

Although the precision and functionality is less than optimal, comparing to Desktop’s calc.exe, but it’s far more superior than Mobile’s IMHO. It’s about time to release it (Release often, right?): http://hellosam.net/project/hrpncalc, a free RPN calculator written in .NET.