Wednesday, April 1, 2009

User Interface, Graphical (GUI)

User Interface, Graphical (GUI):
The use of pictures rather than just words to represent the input and output of a program. A
program with a GUI runs under some windowing system (e.g. The X Window System,
Microsoft Windows, Acorn RISC OS, NEXTSTEP). The program displays certain icons, buttons,
dialogue boxes etc. in its windows on the screen and the user controls it mainly by moving a
pointer on the screen (typically controlled by a mouse) and selecting certain objects by pressing
buttons on the mouse while the pointer is pointing at them.

The graphical user interface, or GUI, provides the user with a method of interacting with the
computer and its special applications, usually via a mouse or other selection device. The GUI
usually includes such things as windows, an intuitive method of manipulating directories and
files, and icons.

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