Microsoft Windows



Microsoft Windows ( also known as Windows or Windows PC) is a series of Software Operating system and graphical user interfaces produced by Microsoft. Microsoft first introduced an operating environment named Windows in November 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces (GUIs). Microsoft Windows came to dominate the world's |personal computer market, overtaking Mac OS, which had been introduced in 1984. As of October 2009, Windows had approximately 91% of the market share of the client operating systems for usage on the Internet. The most recent client version of Windows is Windows 7; the most recent server version is Windows Server 2008 R2; the most recent mobile OS version is Windows Phone 7. The web browser created for Windows PCs is Internet Explorer.

Current versions
Windows 7 Starter A variant for developing countries and netbooks, in which the Aero theme is not included, nor 64-bit compatibility. This edition will be available pre-installed on computers through system integrators or computer manufacturers.
 * Windows 7, for home and business desktops and portable computers
 * Windows 7 Home Basic Windows 7 Home Basic will be available in emerging markets such as Brazil, People's Republic of China, India, Indonesia, Mexico, Pakistan, the Philippines, and Thailand. It will not be available in countries such as Australia, Canada, France, Germany, The Netherlands, United Arab Emirates, Saudi Arabia, New Zealand, the United States, and the United Kingdom. Some Aero options are excluded along with several new features.
 * Windows 7 Home Premium This edition contains features aimed at the home market segment, such as Windows Media Center, Windows Aero and touch-screen controls.
 * Windows 7 Professional This edition is targeted toward enthusiasts and small business users. It includes all the features of Windows 7 Home Premium, and adds the ability to participate in a Windows Server domain. Additional features include operating as a Remote Desktop server, location aware printing, Encrypting File System, Presentation Mode and Windows XP Mode.
 * Windows 7 Enterprise (Microsoft Windows NT 6.1.7600) This edition targets the enterprise segment of the market and will be sold through volume licensing to companies which have Software Assurance contract with Microsoft. Additional features include support for Multilingual User Interface (MUI) packages, BitLocker Drive Encryption, and UNIX application-support. Not available through retail or OEM channels, this edition will be distributed through Microsoft Software Assurance (SA). As a result it includes several SA-only benefits, including a license allowing the running of multiple virtual machines, and activation via VLK.
 * Windows 7 Ultimate Windows 7 Ultimate contains the same features as Windows 7 Enterprise, but unlike that edition it will be available to home users on an individual license basis. Windows 7 Home Premium and Windows 7 Professional users will be able to upgrade to Windows 7 Ultimate for a fee using Windows Anytime Upgrade if they wish to do so. Unlike Windows Vista Ultimate, the Windows 7 Ultimate edition will not include the Windows Ultimate Extras feature or any exclusive features. (6.1.7600)