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Portable computer
There are four basic types of portable computer:
- the laptop (or desknote) with conventional screen and keyboard, requiring a seated position and both hands
- the palmtop which is something between laptop and PDA.
- the Personal digital assistant (PDA), usually held in one hand and operated with the other.
- the wearable computer with handsfree interface, and usually some voice capability (speech recognition and speech synthesis).
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