Which of the following is an input device used to enter motion data in computers or other electronic devices?

Options

A. Monitor
B. Trackball
C. Plotter
D. Joystick

Answer

B

Explanation

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.