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|Company / developer||Microsoft|
|Update method||Windows Update, Windows Store, Windows Server Update Services|
|Supported platforms||IA-32, x64|
|License||Trialware, Microsoft Software Assurance, MSDN subscription, DreamSpark|
|Preceded by||Windows 7 (2009)|
|Succeeded by||Windows 8.1 (2013)|
Windows 8 is a version of Microsoft's Windows computer operating system. The final version for everyone was released everywhere on October 26, 2012. The president of the Windows Division, Steven Sinofsky, said: "With this system we shall make the biggest change from Windows 95", as they have removed the "Start" button and designed a new tile-based user interface to replace the "Start" menu (which first appeared in Windows 95).
Several versions of Windows 8 were made available to software developers well before the final release. The first of these, the Developer Preview, came out in September 2011. On February 29, 2012, Microsoft released a beta version of Windows 8.0 known as the Consumer Preview. Anyone could register online to download this version for free. After the Consumer Preview, a final preview named "Release Preview" was released on May 31, 2012.
On October 26, 2012, Windows 8, as well as a version for devices using ARM processors, called Windows RT and unable to run most Windows applications, both became available to the general public. On the same day, Microsoft also put new devices running Windows 8, including its newly-created Surface tablets up for sale in stores and online.
An update for Windows 8 with new features, such as the return of the "Start" button, was released on October 17, 2013 and is called Windows 8.1. During development, it was known as "Windows Blue", while the original version, Windows 8.0, was codenamed "Midori".
Windows 10 was developed to replace Windows 8 and 8.1, and it came out on July 29, 2015. Users of Windows 7 with Service Pack 1 installed and Windows 8.1 were able to upgrade to Windows 10 for free until July 29, 2016.
Windows 8 provides a new graphic user interface – Modern (also called Metro) UI (suitable for phone, tablet, notebook and classic PCs). This interface shows “tiles” which work as links and also as interactive widgets (tools like RSS, weather, e-mails). Modern UI is best used with a touchscreen, but can be controlled by mouse and keyboard. Windows 8 still offers the classic desktop interface as an option.
Although Windows 8 is faster than Windows 7, it demands more pixels on the screen. The minimum is 1366 x 768 pixels, which affects many users of laptops that have a maximum resolution of 1024 x 600 pixels. Some users with old hardware have for that reason continued to use Windows 7. Windows 8 will work on resolutions lower than this, but some features will be unavailable.
File Explorer, formerly called Windows Explorer, has a new ribbon bar interface. It can stop and restart a file transfer, and makes it easier to save files that have the same name.
|Processor|| 1 GHz clock rate
IA-32 or x64 architecture
Support for PAE, NX and SSE2
| x64 architecture|
Second Level Address Translation (SLAT) support
|Memory (RAM)|| IA-32 edition: 1 GB
x64 edition: 2 GB
|Graphics Card|| DirectX 9 graphics device
WDDM 1.0 or higher driver
|DirectX 10 graphics device|
|Display screen||1024×768 pixels||1366×768 pixels|
|Input device||Keyboard and mouse||A multi-touch display screen|
|Hard disk space|| IA-32 edition: 16 GB
x64 edition: 20 GB
|Other|| USB 3.0 port|
UEFI v2.3.1 Errata B with Microsoft Windows Certification Authority in its database
Trusted Platform Module (TPM)
Tablets and convertibles
|Graphics Card||DirectX 9 graphics device with WDDM 1.2 or higher driver|
|Storage||10 GB free space, after the out-of-box experience completes|
|Standard buttons||'Power', 'Rotation lock', 'Windows Key', 'Volume-up', 'Volume-down'|
|Screen||Touch screen supporting a minimum of 5-point digitizers and resolution of at least 1366x768. The physical dimensions of the display panel must match the aspect ratio of the native resolution. The native resolution of the panel can be greater than 1366 (horizontally) and 768 (vertically). Minimum native color depth is 32-bits.|
|Ambient light sensor||1–30k lux (measure of brightness) capable with dynamic range of 5–60k|
|Accelerometer||3 axes with data rates at or above 50 Hz|
|USB||At least one controller and exposed port.|
|Connect||Wi-Fi and Bluetooth 4.0 + LE (low energy)|
|Other|| Speaker, microphone, magnetometer and gyroscope.
If a mobile broadband device is integrated into a tablet or convertible system, then an assisted GPS radio is required. Devices supporting near field communication need to have visual marks to help users locate and use the proximity technology. The new button combination for Ctrl + Alt + Del is Windows Key + Power.
Two months after Windows 8 was released, there were rumors that Microsoft were making a major update to be codenamed "Blue". In May 2013, Microsoft announced that "Windows Blue" was the codename for Windows 8.1.
On June 26 2013, Microsoft released build 9431 as the Windows 8.1 Preview, which could be downloaded.
On August 14 2013, Microsoft announced that Windows 8.1 would be released digitally on October 17 and released in stores and in new computers on October 18. It included greater customization and new bundled apps such as a calculator, sound recorder, and file manager.
In April 2014, Microsoft released an update for Windows 8.1 with improvements for keyboard and mouse users. The update pins the Windows Store on the task bar. Each modern app has a bar at the top, and can be closed the same way desktop apps are closed.
- "Shared Source Initiative". microsoft.com. Microsoft. http://www.microsoft.com/en-us/sharedsource/default.aspx. Retrieved October 28, 2013.
- Pocket-lint (12 January 2012). "Windows 8 set for October 2012 launch". https://www.pocket-lint.com/apps/news/microsoft/113825-windows-8-october-2012-launch.
- "Windows 8 system requirements". Windows Help. Microsoft. http://windows.microsoft.com/en-US/windows-8/system-requirements. Retrieved 15 December 2012.
- "PAE/NX/SSE2 Support Requirement Guide for Windows 8". http://msdn.microsoft.com/en-us/library/windows/hardware/hh975398.aspx. Retrieved June 4, 2012.
- "What is PAE, NX, and SSE2 and why does my PC need to support them to run Windows 8?". Windows Help. Microsoft. http://windows.microsoft.com/en-US/windows-8/what-is-pae-nx-sse2. Retrieved 15 December 2012.
- "Windows 8 Hardware Certification Requirements". MSDN. Microsoft. http://msdn.microsoft.com/en-us/library/windows/hardware/hh748200.aspx. Retrieved April 22, 2012.
- Windows 8 news microsoft.com
- Computer Magazine
- Microsoft Windows 8 preview microsoft.com
- Windows 8 system requirements microsoft.com