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Trackball is which of the following devi...

Trackball is which of the following devices?

A

Input device

B

Touchpad

C

Output device

D

Barcode reade

Text Solution

Verified by Experts

The correct Answer is:
A
A trackball is a pointing input device. It consists of a ball held by a socket containing sensors to detect a rotation of the ball about two axes. The user rolls the ball with the thumb, fingers or the palm of the hand to move a cursor.
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