Microsoft Office Tutorials and References
In Depth Information
COM 7
INPUT DEVICES
The Mouse
A mouse (Figure 7) is a pointing device that fits comfortably under the palm of your hand.
With a mouse, you control the movement of the pointer , often called the mouse pointer ,on the
screen and make selections from the screen. A mouse has one to five buttons. The bottom of a
mouse is flat and contains a mechanism (ball, optical sensor, or laser sensor) that detects
movement of the mouse.
Most notebook computers come with a touchpad, a small, flat, rectangular pointing device near
the keyboard that allows you to move the pointer by sliding a fingertip on the surface of the pad
(Figure 8). Notice in Figure 8 that the notebook computer has the keyboard built into the unit.
FIGURE 7 A laser mouse (a) uses a laser sensor to detect movement of the mouse. It also includes
buttons you push with your thumb to navigate forward and backward through Web pages. A media mouse
(b) also includes buttons to control media presentations.
(b) optical media mouse
(a) laser mouse
wheel button
slide show
and media
control buttons
wheel button
laser
thumb
button
controls
forward
button
optical
sensor
back button
FIGURE 8 Most
notebook computers have
a touchpad that allows a
user to control the
movement of the pointer.
touchpad
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