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A laptop or notebook (in English: laptop or notebook) is a mobile or portable personal computer, usually weighs between 1 and 3 kg. Laptop computers are able to perform most of the tasks performed by desktop computers, also called "tower" with similar capacity and with the advantage of reduced weight and size; it also joined with the ability to operate for a specified period without being connected to a power grid.
The word laptop translated into Castilian means: lap (lap) and top (above) that is, a computer that can rest on the legs.
The first laptop was considered as the Epson HX-20 developed in 1981, from which the great benefits for the work of scientists, soldiers, businessmen, and other professionals, who saw the advantage of being able to take with them were observed your computer with all the information they need from one place to another.
The Osborne 1 came to the commercial market in April 1981 in the format currently distinguishes them, but then they were extremely limited, even for the technology of the time.
In 1995, with the arrival of Windows 95, selling laptops it increased significantly, and now exceeds the sales of desktops.
In the third quarter of 2008, sales of laptops for the first time exceeded those of desktop computers, according to research firm
