Multiple choice

Track ball is a _____ device.

  1. input

  2. output

  3. both (1) and (2)

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A trackball is an input device because it allows the user to control cursor movement and send commands to the computer. The user rotates the ball to position the on-screen pointer, similar to how a mouse functions, making it a pointing/input device.

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