User interface

A user interface is the way you interact with a computer. Basically, it is the screen you see when you open a program, such as a game or a web browser. It is what you use to type, click and move around the program. It is the way the program shows you how to control the program and how to use it. It includes buttons, menus, icons, and other things that allow you to navigate, select, and interact with the program.