What is User Interface?
User-Interface, often referred as UI, or simply an interface is the medium through which a person controls a software or hardware. An intellectual user interface provides user-friendly experience, allowing the user to interact with the software and hardware intuitively. Most of the software program includes graphical interface, or GUI. It interprets that program involves graphical controls, which a user can select through mouse and keyboard.
In simple terms, it is a set of commands or menus through which a user communicates with the software program. Graphical user interface, that use icons, windows, pop ups and menus have become a standard on a personal computer system.