Ans. :- A joystick is an input device consisting of a stick that pivots on a base and reports. Its angle or direction to the device it is controlling. Joystick are often used to control video games and usually have one or more push-buttons whose state can also be read by the computer. Joystick are also used for controlling machines such as : cranes, trucks, wheelchairs, surveillance cameras and zero turning radius lawn mowers.