GUI

Abbreviated //GUI// (pronounced //GOO-ee//). A program interface that takes advantage of the computer's graphics capabilities to make the program easier to use. Well-designed graphical user interfaces can free the user from learning complex command languages. On the other hand, many users find that they work more effectively with a command-driven interface, especially if they already know the command language. Graphical user interfaces, such as Microsoft Windows and the one used by the Apple Macintosh, feature the following basic components:
 * pointer** **:** A symbol that appears on the display screen and that you move to select objects and commands. Usually, the pointer appears as a small angled arrow. Text -processing applications, however, use an //I-beam pointer// that is shaped like a capital //I//.
 * pointing device** **:** A device, such as a mouse or trackball, that enables you to select objects on the display screen.
 * icons** **:** Small pictures that represent commands, files, or windows. By moving the pointer to the icon and pressing a mouse button, you can execute a command or convert the icon into a window. You can also move the icons around the display screen as if they were real objects on your desk.
 * desktop** **:** The area on the display screen where icons are grouped is often referred to as the desktop because the icons are intended to represent real objects on a real desktop.
 * windows:** You can divide the screen into different areas. In each window, you can run a different program or display a different file. You can move windows around the display screen, and change their shape and size at will.
 * menus** **:** Most graphical user interfaces let you execute commands by selecting a choice from a menu.

By Elaine Southwell