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Windows 8.1 is a release of the Windows NT operating system developed by Microsoft.It was released to manufacturing on August 27, 2013, and broadly released for retail sale on October 17, 2013, about a year after the retail release of its predecessor, and succeeded by Windows 10 on July 29, 2015.
The 64-bit variant runs on CPUs compatible with the 8th generation of x86 (known as x86-64, or x64) or newer, and can run 32-bit and 64-bit programs. 32-bit programs and operating system are restricted to supporting only 4 gigabytes of memory, while 64-bit systems can theoretically support 2048 gigabytes of memory.
In-place upgrades are supported from most editions of Windows 7 with Service Pack 1 and Windows 8.1 with Update 1, while users with Windows 8 must first upgrade to Windows 8.1. Changing between architectures (e.g., upgrading from 32-bit edition to a 64-bit editions) via in-place upgrades is not supported; a clean installation is required.
Windows is a product line of proprietary graphical operating systems developed and marketed by Microsoft.It is grouped into families and subfamilies that cater to particular sectors of the computing industry – Windows (unqualified) for a consumer or corporate workstation, Windows Server for a server and Windows IoT for an embedded system.
Windows RT is a mobile operating system developed by Microsoft and released alongside Windows 8 on October 26, 2012. It is a version of Windows 8 or Windows 8.1 built for the 32-bit ARM architecture (ARMv7), [6] designed to take advantage of the architecture's power efficiency to allow for longer battery life, to use system-on-chip (SoC) designs to allow for thinner devices and to provide a ...
Windows 8 (also sometimes referred to as Windows 8 (Core) to distinguish from the OS itself) [2] is the basic edition of Windows for the IA-32 and x64 architectures. This edition contains features aimed at the home market segment and provides all of the basic new Windows 8 features.
Windows Phone 8.1 is the third generation of Microsoft Mobile's Windows Phone mobile operating system, succeeding Windows Phone 8.It was based on Windows 8.1.Rolled out at Microsoft's Build Conference in San Francisco, California on April 2, 2014, it was released in final form to Windows Phone developers on April 14, 2014 and reached general availability on August 4, 2014.
Windows 95 and Windows NT 4.0 were retroactively given the ability to access the Windows Update website and download updates designed for those operating systems, starting with the release of Internet Explorer 4. The initial focus of Windows Update was free add-ons and new technologies for Windows.