a lever used by a pilot to control the ailerons and elevators of an airplane; stick, control stick
a manual control consisting of a vertical handle that can move freely in two directions; used as an input device to computers or to devices controlled by computers
Microsoft Computer Dictionary
n. A pointing device used mainly but not exclusively for computer games. A joystick has a base, on which control buttons can be mounted, and a vertical stem, which the user can move in any direction to control the movement of an object on the screen; the stem may also have control buttons. The buttons activate various software features, generally producing on-screen events. A joystick is usually used as a relative pointing device, moving an object on the screen when the stem is moved and stopping the movement when the stem is released. In industrial control applications, the joystick can also be used as an absolute pointing device, with each position of the stem mapped to a specific location on the screen. See the illustration. See also absolute pointing device, relative pointing device. Compare game pad.
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