LCD Display
One of the biggest differences between portable and desktop computers is the display. Desktop computers enable both the screen and graphics cards to be changed; in portable computers, both the screen and graphics cards are built into the system. Although most portables feature an external VGA port, which enables a separate monitor to be plugged into the computer, that is the extent of the video expandability of most portable systems. Some recent systems support DualView, a Windows XP feature that enables supported graphics chipsets to use an external monitor as a true secondary monitor instead of as a mirror of or replacement of the built-in display.
Two major types of LCD display screens are used on portables: dual-scan and active-matrix. ...
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