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IBM

MS-DOS Is 30 Years Old Today 433

An anonymous reader writes "Thirty years ago, on July 27 1981, Microsoft bought the rights for QDOS (Quick and Dirty Operating System) from Seattle Computer Products (SCP) for $25,000. QDOS, otherwise known as 86-DOS, was designed by SCP to run on the Intel 8086 processor, and was originally thrown together in just two months for a 0.1 release in 1980 (thus the name). Meanwhile, IBM had planned on powering its first Personal Computer with CP/M-86, which had been the standard OS for Intel 8086 and 8080 architectures at the time, but a deal could not be struck with CP/M's developer, Digital Research. IBM then approached Microsoft, which already had a few of years of experience under its belt with M-DOS, BASIC, and other important tools — and as you can probably tell from the landscape of the computer world today, the IBM/Microsoft partnership worked out rather well indeed."

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