Microsoft released MS-DOS and Word source code publicly, the size is less than 300 KB

Microsoft,Computer History MuseumUnder the cooperation of, we revealed that we will publish the initial source code of MS - DOS and Word for the first time in history.

Microsoft makes source code for MS-DOS and Word for Windows available to public - The Official Microsoft Blog - Site Home - TechNet Blogs
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


Computer History Museum | Press | Computer History Museum Makes Historic MS-DOS and Word for Windows Source Code Available to the Public
http://www.computerhistory.org/press/ms-source-code.html


This project, which is one of the most important software programs on the history of computers, releases source code of MS - DOS and Word. In this project, MS - DOS versions 1.1 and 2.0 widely used in the 1980 's, and Microsoft Word for Windows 1.1a will be released. This seems to have started with young engineers so that they can see and understand what the roots of personal computing was like.

In 1980, Microsoft had supplied the BASIC language interpreter to IBM, but IBM is asked to develop a new operating system (OS). However, since Microsoft had no OS development experience,Seattle Computer ProductsWe obtained the license of the created OS, and based on this license, PC - DOS and MS - DOS will be made.

ByMike Licht

After releasing MS-DOS, Microsoft released the first DOS-based Word in 1983. In addition, in 1989 we released Word for Windows, which will record the unprecedented hits. About how much sells it, about half of the income of sentence processing software sold all over the world for four years until 1989 was kicked out by Word for Windows.

The source code of MS-DOS version 1.1 released is less than 300 KB, and when we created it, there were only 100 employees or fewer in Microsoft. Beginning here, now in the worldApproximately 100,000 people, And Windows 8 of the latest OS has become a large company selling over 200 million licenses.

BySeattle Clouds

These programs with historical value in terms of both engineering and marketing are preserved by the computer history museum and are available for historical and technical research, It is also possible to download it from the following page.

MS-DOS versions 1.1 and 2.0 are from here.

Computer History Museum | @ CHM: MICROSOFT RESEARCH LICENSE AGREEMENT | Microsoft DOS V1.1 and V2.0
http://www.computerhistory.org/ms-dos-early-source-code/agreement/

Microsoft Word for Windows 1.1a can be downloaded from here.

Computer History Museum | @ CHM: MICROSOFT RESEARCH LICENSE AGREEMENT | Microsoft Word for Windows version 1.1a
http://www.computerhistory.org/_static/atchm/microsoft-word-for-windows-1-1a-source-code/agreement/