Which of the following is a lever that can be moved in several directions to control the movement of an image on a computer monitor or similar display screen ? a.Joystick b.Optical Mark Reader c.Visual Display Unit d. MIDI Devices
The Correct Answer is Joystick. Key Points Joy Stick is a pointing device used to move an object on a screen in any direction. It employs a vertical rod mounted on a base with one or two buttons. Joysticks are often used to control video games, and usually have one or more push-buttons whose state can also be read by the computer.
