Question

The function of a rollerball in the mouse is:
1. To give a movement signal to the system
2. For making selection
3. For connection of the mouse to the computer system
4. To attach the mouse to the computer system

Answer 1

Correct Answer - Option 1 : To give a movement signal to the system

The correct answer is To give a movement signal to the system.

• The rollerball in a mouse is used to give a movement signal to the system.
  • The user rolls the ball to position the on-screen pointer (to move the cursor).
  • The rollerball remains stationary, allowing users to simply move the mouse ball with their fingers or with their thumb to move the cursor.