November 10: Bill Gates introduces Windows 1.0 in 1983.

Screenshot of Microsoft Windows 1.0 operating environment showing MS-DOS Executive and other applications.

Windows 1.0 is a graphical operating system for personal computers developed by Microsoft and renamed Microsoft Windows. Windows 1.0 had four versions of improvement and capability up to the creation of Microsoft Windows version 1.04, in 1987 when it was replaced by Windows 2.0.

Screenshot of Microsoft Windows 1.0 operating environment showing MS-DOS Executive and other applications.

As predicted by its creator Bill Gates: "Windows 1.0 is 90% of the Personal Computers operating systems by the end of 1984" and it was, indeed.

On December 31, 2001, Windows 1.0 was officially declared obsolete and Microsoft stopped supporting it.

Screenshot of Microsoft Windows 1.0 operating environment showing MS-DOS Executive and other applications.

Paul Allen and Bill Gates formed a computer company in 1975 with the view that they were a team on every desk and in every home.

Microsoft Windows 1.0 brochure, printed in January 1986

"In June 1980, Gates and Allen hired former classmate at Harvard, Steve Ballmer, to help them in the company. The next month, IBM approached Microsoft with a project code-named "Chess".

MS-DOS Executive file manager.

In response, Microsoft focused on a new operating system, the software that managed and run the computer hardware and also served as a bridge between the hardware and computer programs such as a word processor.

HP150 from 1983 running Microsoft Windows 1.0 

It is the foundation on which computer programs can run. Gates baptized the new operating system as "MS DOS."

Bill Gates introducing Windows 1.0, 1983.

When it became available in 1981, the IBM team with MS DOS, introduced a completely new language to the general public, Type "C:" and various commands encryption gradually became part of daily work. People discovered the inverted slash key (\).

Gates tired but satisfied.

MS DOS was efficient, but also difficult to understand for many people. There had to be a better way to develop an operating system…

Bill Gates y Windows 1.0

Geek Trivia: MS DOS stands for Microsoft Disk Operating System ".

Bill Gates with the first windows 1.0.

Taken literally: http://windows.microsoft.com/es-CO/windows/history#T1=era0

Bill Gates talking with Steve Ballmer in Gates' Bellevue office, 1985.