< hardware > Any hardware component that allows a user to input spatial data to a computer. CAD systems and Graphical User Interfaces (GUI) allow the user to control and provide data to the computer using physical "gestures" - point , click , and drag - typically by moving a hand-held mouse across the surface of the physical desktop and activating switches on the mouse. Movements of the pointing device are echoed on a graphical representation of a desktop on the screen by movements of the mouse pointer and other visual changes.
While the most common pointing device by far is a mouse, other kinds include tracker ball , trackpad , lightpen , various kinds of digitising tablets which use a stylus, and even a special " data glove " that translates the user's movements to computer gestures.
(1997-02-03)