Like other pointing devices such as mice, touchpads or trackballs, operating system software translates manipulation of the device into movements of the pointer or cursor on the monitor. IBM ThinkPad caps (left-to-right): Soft Dome, Soft Rim, Classic Dome, Eraser Head (discontinued)Ī pointing stick (or trackpoint, also referred to generically as a nub) is a small joystick used as a pointing device typically mounted centrally in a computer keyboard.
