A complete computer contained in a touch screen. Tablet computers can be specialized for only Internet use or be full-blown, general-purpose PCs with all the bells and whistles of a desktop unit. The distinguishing characteristic is the use of the screen as an input device using a stylus or finger. In 2000, Microsoft began to promote a version of Windows XP for tablet computers, branding them "Tablet PCs." See Tablet PC, Ultra-Mobile PC, Webpad and touch screen.
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