Joystick is an input device.
Joystick moves in all the direction and is used to control the movement of the cursor.
Joystick provides controls like:
Joystick digital control helps movement in up, down, left and right directions only. The movement is thus limited in nature.
Joystick glide control and direct control helps movement in all direction. It means 360º movement is possible.
Joysticks having direct control comes with added ability to respond to distance and speed.