A laptop computer is a small computer that has a flat screen and usually weighs 1-5 kilograms can easily be transported in temporary spaces such as on airplanes, in libraries, classroom, in garden and at the meetings. This computer usually called a notebook computer or notebook. A laptop computers are more expensive than desktops because more difficult to design and manufacture. Laptops usually run on batteries for a short period or can run from an external AC/DC adapter. For example, the best-known makers of laptop computers are Apple, Asus, Compaq, Dell, HP, IBM, and Toshiba
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