Track Ball

Dear Members,

        In this lesson we will increase your knowledge about the track ball and its uses....

SO FRIENDS LETS START OUR LESSON

• Track Ball:-

                     

                              Trackball is a pointing device consisting of a ball held by a socket containing sensors to detect a rotation of a ball about two axes- like an  upside down mouse with an exposed protruding ball.

 The user rolls the ball with the thumb, fingers or a palm of the hand to move a cursor.

Input Devices

Dear Members,

                        Many of input devices used in computer and we will discuss some important and common devices step by step in our upcoming lessons. So, Its easy for you to read and to learn  

INPUT DEVICES

1. Mouse

2. Keyboard

3.Scanner

4. Track ball

and more....

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Thanks for your time.