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Types of Mice

Functions: The mouse allows the user to select objects, move
windows, open applications or scroll through long documents or Web
pages.

NB: Mouse pad refers to a surface on which a mouse can be moved. It is
typically a rectangular rubber pad covered with fabric, providing more traction
than a wooden or glass desktop or table top.

Touchpad

Touchpad is a small rectangular surface that you can move your finger on it to
control the movement of the mouse pointer (cursor) on the computer screen. It is
a pointing device on laptops and notebooks. Another name for Touchpad is
Trackpad. Like the mouse, the Touchpad has three parts (buttons). These are:
Touch surface

Left click
Right click

Touchpad

Function: A touch pad is small, touch-sensitive pad used as a pointing
device on some portable computers. By moving a finger or other object
along the pad, you can move the pointer on the display screen.

Pointing Stick

Pointing stick or track point; is a pointing device that looks like a pencil-top
eraser in the middle of the keyboard of laptops computer.

Pointing Stick

Function: It is used for pointing.