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Most computers have a reset line that brings the device into the startup state and is active for a short time after powering on. For example, in the x86 architecture, asserting the RESET line halts the CPU; this is done after the system is switched on and before the power supply has asserted "power good" to indicate that it is ready to supply ...
Compaq Presario 425 all-in-one (1993) In September 1993, Compaq introduced the Compaq Presario brand of IBM PC–compatible computers as the company's first foray into the retail computer market with the release of three models: the all-in-one 400 series, the horizontal desktop 600 series, and the tower-based 800 series.
The PC-speaker in the Compaq Portable 486 is unique in that there is a 3.5 mm audio input jack on the side of the unit to allow a third party ISA sound card to pass through its audio output to the PC speaker. [5] Compaq released two versions of the Compaq Portable 486 with a faster, 66 MHz Intel 80486DX2 CPU, named the Compaq Portable 486/66 ...
In the 1990s, as IBM's own PC division declined, Compaq faced other IBM PC Compatible manufacturers like Dell, Packard Bell, AST Research, and Gateway 2000. By the mid-1990s, Compaq's price war had enabled it to overtake IBM and Apple, while other IBM PC Compatible manufacturers such as Packard Bell and AST were driven out from the market.
The Compaq Portable 386 is a computer released by Compaq Computer Corporation in 1987. [1] It was equipped with a 20 MHz Intel 80386 CPU , 1 MB RAM , 16 KB ROM, 1.2 MB 5¼-inch floppy , 40 or 100 MB hard disk drive , priced at US$ 7,999 or 9,999 respectively, [ 1 ] [ 2 ] and a 10" amber gas-plasma display .
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 The Compaq Portable 286, Compaq's version of the PC AT was offered in the original Compaq Portable chassis; equipped with 6/8 MHz 286 and a high-speed 20 MB hard ...
Compaq's efforts were possible because IBM had used mostly off-the-shelf parts for the PC and published full technical documentation for it, and because Microsoft had kept the right to license MS-DOS to other computer manufacturers. The only difficulty was the BIOS, because it contained IBM's copyrighted code.
The ProLinea was notorious for touching off a fierce price war in the personal computer market from its launch in June 1992. [4] [5] Under a directive from Compaq's recent CEO Eckhard Pfeiffer, the company originally sold lower-end models in the range for under US$900—a price that was virtually unheard of for brand-new desktops from a major computer vendor.