# Calculon - A desktop calculator in PyQt A simple calculator application implemented in Python using PyQt. The UI was designed in Qt Designer and the calculator operations are implemented using simple stack-based logic. ![Calculon](screenshot-calculator.jpg) > If you think this example app is neat and want to learn more about PyQt5, [take a look at my ebook & online course "Create Simple GUI Applications"](https://martinfitzpatrick.name/create-simple-gui-applications) which covers everything you need to know to start building your own applications with PyQt5.