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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 Portable was basically a PC/XT motherboard, transplanted into a Compaq-style luggable case. The system featured 256 kilobytes of memory (expandable to 640 KB), an added CGA card connected to an internal monochrome amber composite monitor, and one or two half-height 5 + 1 ⁄ 4-inch 360 KB floppy disk drives, manufactured by Qume.
The IBM 5100 Portable Computer is ... Because SCAMP was the first to emulate APL\1130 performance on a portable, single user computer, PC Magazine in 1983 designated ...
The Compaq Portable is an early portable computer which was one of the first IBM PC compatible systems. It was Compaq Computer Corporation 's first product, to be followed by others in the Compaq Portable series and later Compaq Deskpro series.
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.
Only the Casio E-115, E-125 and EM-500 were Pocket PCs. All others were using the older "Palm-sized PC" operating system except for the BE-300, which ran a stripped-down version of Windows CE 3.0 and would not run any Pocket PC software and many applications written for Windows CE itself.
The Texas Instruments Portable Professional Computer (TIPPC) is a portable version of Texas Instruments Professional Computer (TIPC), [1] and are devices that were released on January 31, 1983. The TIPC is a desktop PC and the TIPPC is a fully compatible, portable version of the TIPC, and both machines were DOS-compatible, [2] but not IBM PC ...
"IBM PC compatible" becomes "Standard PC" in 1990s, and later "ACPI PC" in 2000s. An IBM-brand PC became the exception rather than the rule. An IBM-brand PC became the exception rather than the rule. Instead of placing importance on compatibility with the IBM PC, vendors began to emphasize compatibility with Windows .