Tech Infinite ∞

Microsoft released the source code for MS DOS 1.1 and 2.0 version and Microsoft Word for Windows 1.1 on March 25 2014. With the help of the Computer History Museum, they are making this code available to the public for the first time.

Initially on August 1980′s MS-DOS was renamed of 86-DOS which was written by Tim Paterson of Seattle Computer Products. In May 1981 Microsoft hired Paterson and bought 86-DOS for $75,000 in July, which was further renamed to MS-DOS. The First DOS version of word was released in 1983. In 1989, Word for Windows arrived, and within four years was generating over half the revenue of the worldwide word-processing market.

As this was quite a long time, and keeping these source code is really appreciated. Microsoft Research managing director Roy Levin had said-“Thanks to the Computer History Museum, these important pieces of source code will be preserved and made available to the community for historical and technical scholarship,”.

source:-
http://niteshretha.com.np/?p=1214   
http://blogs.technet.com/b/microsoft_blog/archive/2014/03/25/microsoft-makes-source-code-for-ms-dos-and-word-for-windows-available-to-public.aspx