Laptop
Alternatively referred to as a notebook, a laptop is a portable computer that has most, or all, of the same abilities as a desktop, but is small enough for easy mobility. Portable computers run off AC power or batteries, such as NiMH, Nicad, or Li-ionpacks, for several hours.
As you can see in the picture, the Dell Latitude D610 notebook has everything needed for normal operation. It has a LCD screen, keyboard, and touchpad. Although a laptop may have multiple external devices and cables connected to it, no external connections are required for standard usage.
Tip: A laptop is not spelled as labtop, lab top, or lap top.
Today, most laptop computers are becoming thinner and lighter to help compete with other devices, such as tablets. Some laptops may be also be referred to as Ultrabooks.
The first laptop or portable computer
The IBM 5100 is the first portable computer, which was released on September 1975. The computer weighed 55 pounds and had a five inch CRT display, tape drive, 1.9MHz PALM processor, and 64KB of RAM. In the picture is an ad of the IBM 5100 taken from a November 1975 issue of Scientific America.
The first truly portable computer or laptop is considered to be the Osborne I, which was released on April 1981 and developed by Adam Osborne. The Osborne I weighed 24.5 pounds, had a 5-inch display, 64 KB of memory, two 5 1/4" floppy drives, ran the CP/M 2.2 operating system, included a modem, and cost US$1,795.
The IBM PC Division (PCD) later released the IBM portable in 1984, it's first portable computer that weighed in at 30 pounds. Later in 1986, IBM PCD announced it's first laptop computer, the PC Convertible, weighing 12 pounds. Finally, in 1994, IBM introduced the IBM ThinkPad 775CD, the first notebook with an integrated CD-ROM.
Also see: Battery, Booklet, Computer, Cooler pad, Dynabook, ExpressCard, Fn, Luggable computer, LCD, Netbook, OLPC, PC Card, Portable, Portable computer
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