A tablet is a type of notebook computer that has an LCD screen on which the user can write using finger and swipe actions or by using a special-purpose pen, or stylus. All user input is directly via the LCD screen and not a keyboard or mouse. On a tablet computer, handwriting is digitized and can be converted to standard text through handwriting recognition, or it can remain as handwritten text. The stylus also can be used to type on a pen-based key layout where the lettered keys are arranged differently than a QWERTY keyboard. Tablet PCs can be equipped with a keyboard and/or a mouse for input.
The tablet PC relies on digital ink technology, where a digitizer is laid under or over an LCD screen to create an electromagnetic field that can capture the movement of the special-purpose pen and record the movement on the LCD screen. The effect is like writing on paper with liquid ink.
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