Graphical User Interface (part 1)

A graphical user interface (GUI) is a type of user interface that allows users to interact with electronic devices using images rather than text commands. A GUI can be used in computers, hand-held devices such as MP3 players, portable media players or gaming devices, household appliances and office equipment. A GUI represents the information and actions available to a user through graphical icons and visual indicators as opposed to text-based interfaces. The actions are usually performed through direct manipulation of the graphical elements.

A GUI uses a combination of technologies and devices to provide a platform the user can interact with, for the tasks of gathering and producing information.

This makes it easier for people with few computer skills to work with and use computer software. The most common combination of such elements in GUIs is the WIMP paradigm, which stands for “window, icon, menu and pointing device”.

A window is an area on the screen that displays information. Its contents are displayed independently from the rest of the screen. An example of a window is what appears on the screen when the "My Documents" icon is clicked in the Windows Operating System. It is easy for a user to manipulate a window: it can be opened and closed by clicking on an icon or application, and it can be moved to any area by dragging it. A window can be placed in front or behind another window, its size can be adjusted, and scrollbars can be used to navigate the sections within it. Multiple windows can also be open at one time, in which case each window can display a different application or file – this is very useful when working in a multitasking environment. The system memory is the only limitation to the amount of windows that can be open at once.

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