1. WINDOWS 1.0 THE FIRST VERSION OF WINDOWS

2. WINDOWS 1.0 Released date: November 20, 1985 Windows 1.0 allow the user to hop seamlessly between a word processor, spreadsheet, database, and graphic software. Programs: Calculator, Paint, Notepad, Write, Terminal, Clock, Calendar, File Manager, and game called Reversi. Support Status: Unsupported as of December 31, 2001.

4. WINDOWS 2.0 THE SECOND VERSION OF WINDOWS

5. WINDOWS 2.0 Released date: December 9, 1987. It is the successor of 1.0 version. Features: Overlapping Windows, Resizable Windows, Menu Keyboard Shortcuts, VGA support 16-color. New Added Programs: MS Word, Excel, and Integrated the Control Panel. Support Status: Unsupported as of December 31, 2001.

7. WINDOWS 2.1 X WINDOWS 2.1X(ALSO KNOWN AS WINDOWS/286 OR WINDOWS/386)

8. WINDOWS 2.1 X Released date: May 27, 1988. It is the successor of 2.0 version. Released with two different variants: Windows/286(not use the high memory area) and Windows/386(designed to use both conventional and extended memory, and perform well both critically and commercially). New Added Programs: based on two variants Support Status: Unsupported as of December 31, 2001.

10. WINDOWS 3.0 PRECEDED BY WINDOWS 2.1X

11. WINDOWS 3.0 Released date: May 22, 1990. It is the successor of 2.1x version. Added Features: Word, Excel, and PowerPoint could run simultaneously. Improved UI and Windows Icons, Solitaire card game added, and better memory management, Program Manager, and File Manager. New Added Programs: PowerPoint, Word Processor, and Project. Support Status: Unsupported as of December 31, 2001.

13. WINDOWS 3.1 PRECEDED BY WINDOWS 3.0

14. WINDOWS 3.1 Released date: April 6, 1992. It is the successor of 3.0 version. Added Features: TrueType Fonts, Icons more detailed can be dragged and dropped, first version distributed via CD-ROM. New Added Programs: Support Status: Unsupported as of December 31, 2001.

16. WINDOWS NT 3.1 FIRST VERSION OF MICROSOFT’S WINDOWS “NEW TECHNOLOGY”

17. WINDOWS NT 3.1 Released date: July 27, 1993. Added Features: it is not an update of Windows 3.1 but Enhanced the reliability and security of the System. Business desktop 32-bit operating System. New Functions: User Manager. NTFS file System, network administration tools and performance monitor. Support Status: Unsupported as of November 1, 2008.

19. WINDOWS 3.2 “CHINESE WINDOWS”

20. WINDOWS 3.2 Released date: 1993. Added Features: Simplified Chinese Version of Windows for Chinese Market, it fixed only the issues related to the complex writing system of the Chinese language. Support Status: Unsupported as of November 1, 2008.

22. WINDOWS NT 3.5 SECOND VERSION WINDOWS NEW TECHNOLOGY

23. WINDOWS NT 3.5 Released date: September 21, 1994 as a successor of NT 3.1 Added Features: Increase the speed of Operating System, require less memory. Support Status: Unsupported as of December 31, 2001

25. WINDOWS NT 3.51 THIRD VERSION WINDOWS NEW TECHNOLOGY

26. WINDOWS NT 3.51 Released date: May 30, 1995 as a successor of NT 3.5 Added Features: Provides client/server and 3D support. Support Status: Unsupported as of September 30, 2002.

28. WINDOWS 95 MOST ICONIC VERSION OF WINDOWS

29. WINDOWS 95 Released date: August 24, 1995 as a successor of Windows 3.1 and 3.2 Added Features: Taskbar, Start Menu, and the plug and play function. Also introduction to Internet Explorer Browser. Support Status: Unsupported as of December 31, 2001.

31. WINDOWS NT 4.0 FOURTH VERSION WINDOWS NEW TECHNOLOGY

32. WINDOWS NT 4.0 Released date: 1996 as a successor of Windows 3.1 and 3.2 Added Features: First business-oriented operating System, graphical interface similar to Windows 95. Support Status: Unsupported as of July 9, 2006.

34. WINDOWS 98

35. Released date: June 25, 1998 as a successor of Windows 3.1 and 3.2 Added Features: Outlook Express, Microsoft Chat, Web Publishing Wizard. Support Status: Unsupported as of July 11, 2006.

37. WINDOWS 2000 DIRECT SUCCESSOR OF WINDOWS NT 4.0

38. WINDOWS 2000 Released date: February 17, 2000 as a successor of Windows NT 4.0 Added Features: Improve Device Manager, Windows Media Player, and multilingual User Interface with users being able to choose their display language. Support Status: Unsupported as of July 13, 2010.

40. WINDOWS ME “MILLENNIUM EDITION” LATER CALLED “MISTAKE EDITION”

41. WINDOWS ME Released date: September 14, 2000 as a successor of Windows 98 Users reported a multitude of problems with its installation and operation. Restoration that could remove and restore certain updates following a faulty installation of a program. Support Status: Unsupported as of July 11, 2006.