Question

________ out of three rollers are responsible for movements of cursor on screen.

• A. $2$
• B. $3$
• C. $1$
• D. All are responsible

Answer 1

The correct option is A $2$

Two out of three rollers are responsible for movements of cursor on screen.

A mouse moves the graphical pointer by being slid across a smooth surface. The distance and direction information from the sensors is then transmitted to the computer, and the computer moves the graphical pointer on the screen by following the movements of the mouse. Another common mouse is the optical mouse.