Windows 8 is a version of
Microsoft Windows (an
operating system produced by
Microsoft) for use on personal computers, including home and business
desktops,
laptops,
tablets, and
home theater PCs. Development of Windows 8 started before the release of its predecessor,
Windows 7, in 2009. Its existence was first announced at
CES 2011, and followed by the release of three
pre-release versions from September 2011 to May 2012. The operating system was
released to manufacturing on August 1, 2012, and was released for
general availability on October 26, 2012.
[3] Windows 8 uses version 6.2 of the
Windows NT kernel.
Windows 8 introduces significant changes to the operating system's
platform, primarily focused towards improving its user experience on
mobile devices such as
tablets to better compete with other
mobile operating systems like
Android and Apple's
iOS.
[4] Windows 8 features a new
touch user interface and
shell based on Microsoft's
"Metro" design language, featuring a new
Start screen
with a grid of dynamically updating tiles that represent applications.
The Start screen replaces the "Start menu" of earlier Windows versions.
There is a new
app platform with an emphasis on
touchscreen input, and the new
Windows Store to obtain and/or purchase applications to run on the operating system.
In addition, Windows 8 takes advantage of new or emerging technologies like
USB 3.0, 4Kn
Advanced Format,
near field communications,
cloud computing, and the low-power
ARM architecture. It includes new security features such as built-in
antivirus capabilities, a new installation process optimized for
digital distribution, and support for secure boot (a
UEFI feature which allows operating systems to be
digitally signed to prevent malware from altering the
boot process). Synchronization of certain apps and settings between multiple devices is supported.
Windows 8 was released to mixed reception. Although reaction towards
its performance improvements, security enhancements, and improved
support for touchscreen devices was positive, the new user interface of
the operating system has been widely criticized for being potentially
confusing and having a steep
learning curve
(especially when used with a keyboard and mouse instead of a
touchscreen). Despite these shortcomings, 60 million Windows 8 licenses
have been sold through January 2013. This includes upgrades and sales to
OEMs for new PCs.
[5]
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