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Windows 7, a major release of the Microsoft Windows operating system, was available in six different editions: Starter, Home Basic, Home Premium, Professional, Enterprise and Ultimate. Only Home Premium, Professional, and Ultimate were widely available at retailers. The other editions focus on other markets, such as the developing world or enterprise use. All editions support 32-bit IA-32 CPUs and all editions except Starter support 64-bit x64 CPUs. 64-bit installation media is not included in Home-Basic edition packages, but can be obtained separately from Microsoft. According to Microsoft, the features for all editions of Windows 7 are stored on the machine, regardless of which edition is in use. Users who wish to upgrade to an edition of Windows 7 with more features can then use Windows Anytime Upgrade to purchase the upgrade and to unlock the features of those editions.〔〔 Microsoft announced Windows 7 pricing information for some editions on June 25, 2009, and Windows Anytime Upgrade and Family Pack pricing on July 31, 2009.〔 == Main editions == Since October 31, 2013, Windows 7 is no longer available in retail (except for the Professional edition preinstalled):〔http://windows.microsoft.com/en-us/windows/lifecycle〕 ; : Windows 7 Starter is the edition of Windows 7 that contains the fewest features. It is only available in a 32-bit version and does not include the Windows Aero theme. The desktop wallpaper and visual styles (Windows 7 Basic) are not user-changeable. Microsoft originally intended to restrict users of this edition to running three simultaneous applications but this limitation was dropped. : This edition was available pre-installed on computers, especially netbooks or Windows Tablets, through system integrators or computer manufacturers using OEM licenses.〔 ; : Windows 7 Home Basic was available in "emerging markets", in 141 different countries. Some Windows Aero options are excluded along with several new features.〔 Home Basic, along with other editions sold in emerging markets, include geographical activation restriction, which requires users to activate Windows within a certain region or country.〔(【引用サイトリンク】 How to Tell: Geographically Restricted Microsoft Software )〕 ; : This edition contains features aimed at the home market segment, such as Windows Media Center, Windows Aero and multi-touch support. It was available in both 32-bit and 64-bit versions. ; : This edition is targeted towards enthusiasts, small-business users and schools.〔 It includes all the features of Windows 7 Home Premium, and adds the ability to participate in a Windows Server domain.〔 Additional features include support for up to 192 GB of random-access memory (increased from 16 GB), operating as a Remote Desktop server, location aware printing, backup to a network location, Encrypting File System, Presentation Mode, Software Restriction Policies (but not the extra management features of AppLocker) and Windows XP Mode.〔 It too was available in both 32-bit and 64-bit versions. ; : This edition targeted the enterprise segment of the market and was sold through volume licensing to companies which have a 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 is distributed through Microsoft Software Assurance (SA).〔 As a result it includes several SA-only benefits, including a license allowing the operating of diskless nodes (diskless PCs) and activation via VLK.〔(【引用サイトリンク】 Products: Windows 7 Enterprise )〕 ; : Windows 7 Ultimate contains the same features as Windows 7 Enterprise, but unlike the Enterprise edition, it was available to home users on an individual license basis.〔 Windows 7 Home Premium and Windows 7 Professional users are 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 does not include the Windows Ultimate Extras feature or any exclusive features as Microsoft had stated.〔 Mainstream support for all editions (new features and bug fixes) ended as of January 2015, but extended Support (security updates) will continue until January 2020.〔(【引用サイトリンク】 Microsoft product support lifecycle information by product family: Windows 7 )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Windows 7 editions」の詳細全文を読む スポンサード リンク
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