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The first commercially sold portable computer might be the 20-pound (9.1 kg) MCM/70, released 1974. [citation needed] The next major portables were the 50-pound (23 kg) IBM 5100 (1975), Osborne's 24-pound (11 kg) CP/M-based Osborne 1 (1981) and Compaq's 28-pound (13 kg), advertised as 100% IBM PC compatible Compaq Portable (1983).
The Handheld PC (H/PC) is a class of portable computers running Windows CE created and marketed by Microsoft. Introduced in 1996, the intent of Windows CE was to provide an environment for applications compatible with the Microsoft Windows operating system, on processors better suited to low-power operation in a portable device.
Several categories of portable computing devices can run on batteries but are not usually classified as laptops: portable computers, PDAs, ultra mobile PCs (UMPCs), tablets, and smartphones. A portable computer is a general-purpose computer that can be easily moved from place to place, but cannot be used while in transit, usually because it ...
The IBM Portable Personal Computer 5155 model 68 is an early portable computer developed by IBM after the success of the suitcase-size Compaq Portable. It was released in February 1984 and was quickly replaced by the IBM Convertible , only roughly two years after its debut.
In 1985, Compaq introduced the Portable 286, but it was replaced by the more compact Portable II in a redesigned case within a few months. The Portable 286 featured a full-height hard disk, and the options of one half-height floppy drive, two half-height floppy drives, or a half-height floppy drive and a tape backup drive.
A Pocket PC (P/PC, PPC) is a class of personal digital assistant (PDA) that runs the Windows Mobile operating system, which is based on Windows CE/Windows Embedded Compact, and that has some of the abilities of modern desktop PCs. The name was introduced by Microsoft in 2000 as a rebranding of the Palm-size PC category and was marketed until 2007.
The Epson HX-20 from 1982 was the first portable computer to be called a "notebook".. The terms laptop and notebook both trace their origins to the early 1980s, coined to describe portable computers in a size class smaller than the contemporary mainstream units (so-called "luggables") but larger than pocket computers.
A laptop computer or notebook computer, also known as a laptop or notebook, is a small, portable personal computer (PC). Laptops typically have a clamshell form factor with a flat-panel screen on the inside of the upper lid and an alphanumeric keyboard and pointing device on the inside of the lower lid.