HP11C is a calculator app for windows that uses Reverse Polish Notation for calculations.
Download the latest GitHub release and run the installer, or download the standalone .exe from here
Launch the app from the Start menu or type hpcalc in a command prompt or Run window. Or, if you have the standalone, run the.exe by double-clicking it.
Pull requests are welcome. For major changes, please open an issue first to discuss what you would like to change.