4. What is WINDOWS 8 ?
Windows 8 is a version of the Microsoft Windows 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 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
introduces a new touch-friendly shell and user interface 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-inantivirus
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 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]
http://debugmode.net
8. Windows 8 App Development using
JavaScript
Developer Evangelist Telerik
Microsoft MVP
Mindcracker MVP
@debug_mode
fb.com/debugmode.net
Delhi User Group
C-Sharp corner User Group
9. What is WinRT ?
It is unmanaged
Native UI to create
apps for Windows
Store
It is available to all the
languages like C#
,JavaScript and C++
http://debugmode.net
11. What is WinRT
Unmanaged Managed JavaScript
Code Code Code
Projection
Layer
http://debugmode.net
12. What is WinJS ?
WinJS works on
It is projected WinRT
PROMISES design
to JavaScript
pattern
Promise is a mechanism
It is JavaScript library to
to schedule a work to
be done on value yet create application for
not computed Windows Store
http://debugmode.net
