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40 years of Microsoft: 40 milestones in Microsoft's history

40 years of Microsoft: 40 milestones in Microsoft's history

40 years ago, on April 4, 1975, Bill Gates and Paul Allen, friends from Lakeside School in Seattle, formed a little partnership.

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40 years ago, on April 4, 1975, Bill Gates and Paul Allen, friends from Lakeside School in Seattle, formed a little partnership. Gates was 19 and Allen 22. That partnership was called Micro-soft.

The 40-year-long journey saw Microsoft evolving into one of the world's largest technology companies and is marked with numerous milestones.

Listed below are 40 of them:

1975 Microsoft founded

January 1, 1979 Microsoft moves from Albuquerque, New Mexico to Bellevue, Washington

June 25, 1981 Microsoft incorporates

August 12, 1981 IBM introduces its personal computer with Microsoft's 16-bit operating system, MS-DOS 1.0

February 26, 1986 Microsoft moves to corporate campus in Redmond, Washington

March 13, 1986 Microsoft stock goes public

August 1, 1989 Microsoft introduces earliest version of Office suite of productivity applications

May 22, 1990 Microsoft launches Windows 3.0

August 24, 1995 Microsoft launches Windows 95

June 25, 1998 Microsoft launches Windows 98

January 13, 2000 Steve Ballmer named president and chief executive officer for Microsoft

February 17, 2000 Microsoft launches Windows 2000

May 31, 2001 Microsoft launches Office XP

October 25, 2001 Microsoft launches Windows XP

November 15, 2001 Microsoft launches Xbox

November 7, 2002 Microsoft and partners launch Tablet PC

November 22, 2005 Microsoft launches Xbox 360

January 30, 2007 Microsoft launches Windows Vista and the 2007 Microsoft Office System to consumers worldwide

June 27, 2008 Bill Gates transitions from his day-to-day role at Microsoft to spend more time on his work at The Bill & Melinda Gates Foundation

October 22, 2009 Microsoft launches Windows 7

June 15, 2010 Microsoft launches general availability of Office 2010

November 4, 2010 Microsoft launches Kinect for Xbox 360

November 10, 2010 Microsoft launches Windows Phone 7

June 28, 2011 Microsoft launches Office 365

October 13, 2011 Microsoft closes its acquisition of Skype

October 26, 2012 Microsoft launches Windows 8 and Microsoft Surface

October 29, 2012 Microsoft unveils Windows Phone 8

January 29, 2013 Microsoft launches Office 2013, expands Office 365

February 18, 2013 Microsoft launches Outlook.com

May 21, 2013 Microsoft unveils Xbox One

September 3, 2013 Microsoft announces decision to acquire Nokia's devices and services business, license Nokia's patents and mapping services

October 17, 2013 Microsoft launches Windows 8.1

October 22, 2013 Microsoft launches Surface 2 and Surface Pro 2

November 22, 2013 Microsoft launches Xbox One

February 4, 2014 Satya Nadella named chief executive officer for Microsoft

March 27, 2014 Microsoft launches Office for iPad

June 20, 2014 Microsoft launches Surface Pro 3

September 15, 2014 Minecraft to join Microsoft announcement

November 6, 2014 Microsoft announces Office apps for Android tablets

January 21, 2015 Microsoft reveals Windows 10

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