The presentation file here shows how to develop a calculator in Microsoft Office PowerPoint. The code is open for you to see, use and modify for your own use. Start the slide show to start PowerPoint Calculator. You can interact with the calculator by clicking on the buttons using the mouse. Install Shortcut Manager for PowerPoint to interact with the calculator using the keyboard. The keys that get activated by the code in the presence of Shortcut Manager for PowerPoint are shown next to the PowerPoint Calculator.

The demo presentation that has the code is available for download here .