Chapter 20. Mice and Trackballs


Mice and trackballs are members of a class generically described as pointing devices. All pointing devices have the same purpose allowing you to move the cursor (or pointer) around the screen and to click to select items or perform other functions. A great variety of fiendishly clever pointing devices are built into notebook computers, but nearly all desktop systems use mice. Those few that don't use a trackball, which is essentially a mouse turned on its back, with the roller ball accessible.


    PC Hardware in a Nutshell
    PC Hardware in a Nutshell, 3rd Edition
    ISBN: 059600513X
    EAN: 2147483647
    Year: 2002
    Pages: 246

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