Microsoft open sourced MS-DOS & Office Word

Today Microsoft has released the source code of the softwares MS DOS 1.1 & 2.0 & Word for Windows 1.0 that marked the beginning of the successes for the software giant. Microsoft's managing director of research department, Roy Levin wrote in a blog post: "... to help future generations of technologists better understand the roots of personal computing.".


MS DOS, originally code named "Chess," took root in 1980 when IBM asked Microsoft to produce an OS to run on its computers. Word for Windows was released in 1989, and with in four years had captured half of the revenue of the word-processing market, according to Levin.

This move has intrigued the curiosity of the developers as how Microsoft managed to introduce features back in those days with low level languages in Word that are still to date very difficult to implement which developed APIs & development kits.

MS-DOS was a renamed version of 86-DOS, written by Tim Paterson of Seattle Computer Products. Microsoft hired Paterson in May 1981, bought 86-DOS 1.10 for $75,000 in July, and renamed it MS-DOS. Microsoft released the first DOS-based version of Microsoft Word in 1983.

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