GUI CALCULATOR

This script user Tkinter to provide a Graphical User Interface.

No Requirements because Tkinter and time is inbuilt

These are customizable

1. The refresh rate (how fast the display updates)
2. Colours: background,button colour
3. Text: font, size, colour
4. The size of the GUI window can be adjusted during execution
5. The default size of the GUI window can be adjusted in the script
6. The button text, position, size