In order for this program to work, you must have Python and PyQt downloaded on your computer. If it is not installed, you can download and install from the this addresses.
Python web address: http://www.python.org
PyQt download address: http://www.riverbankcomputing.co.uk/software/pyqt/download
Click here to download for the Program codes.
GNU / Linux screenshot
The program's work:
Known values will be entered into the related boxes, the button of the desired value to be learned will be clicked. The result is written to the screen and the corresponding input box.