Difference between Trackballs, Track-pads and Track-point

a) Trackball:

A trackball is a stationary pointing device with a ball on its top or side. To move the pointer using a trackball, you rotate the ball with your thumb, fingers, or the palm of your hand. In addition to the ball, a trackball usually has one or more buttons that work just like mouse buttons. 

b) Track-pad:

Track-pad also known as glide point, pressure sensitive tablet, glide pad or Track-pad is an input device placed usually on laptops to move cursor. Track-pads are placed with keyboards on laptop computers. When user don’t have external mouse or he don’t want to use one, Track-pad is the best choice. Users can move cursor by using their fingers. Users move their fingers or drag through the flat surface of the touch-pad to use track-pad or to input data/information. Wherever you move your fingers, the cursor moves to that direction.

c) Track Point:

The Track-point with its replaceable rubber cap is manipulated with the tip of the index finger. The pointing stick is essentially designed as a miniaturized joystick. Applied pressure in any direction pushes the cursor in the same direction. The more force applied to the device, the faster the cursor’s velocity. Left and right mouse buttons are located just below the space-bar on models equipped with a Track-point.

 Conclusion:

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