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Compaq was able to market a legal IBM clone because IBM mostly used "off the shelf" parts for their PC. Furthermore, Microsoft had kept the right to license MS-DOS, the most popular and de facto standard operating system [26] for the IBM PC, to other computer manufacturers.
The Compaq Deskpro is a line of business-oriented desktop computers manufactured by Compaq, then replaced by the Evo brand in 2001. [1] Models were produced containing microprocessors from the 8086 up to the x86-based Intel Pentium 4. [2] The Deskpro name, in an inverted fashion as "ProDesk", is still in use by HP, which Compaq merged with in 2002.
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 Deskpro 386 is a line of desktop computers in Compaq's Deskpro range of IBM PC compatibles.Introduced in September 1986, the Deskpro 386 was the first personal computer to feature Intel's 32-bit 80386 microprocessor.
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.
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 main difficulty was the BIOS, because it contained IBM's copyrighted code.