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IOS Mobile operating System

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                                           The iPhone OS, now the IOS is an operating system developed by Apple. Exclusively, for iDevices.

In 2007, Apple extended their device range namely, ipod touch, ipad, ipad mini and second generation apple television. From June 2014, apple’s app store consisted of more than 1.2 million IOS applications and have been downloaded more than 60 billion times.It had a 21% share of the smartphone mobile operating system units shipped in the fourth quarter of 2012, behind Google’s Android.

By the middle of 2012, there were 410 million devices activated. According to the special media event held by Apple on September 12, 2012, 400 million devices had been sold by June 2012

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IOS’ user interface has the ‘touch’ concept, sliders, switches, and buttons, pinching and tapping. This operating system uses a multi touch gesture which is direct manipulation.

IOS shares framework like Core Foundation and Foundation with OS X, but IOS uses Cocoa Touch toolkit, instead of OS X’s Cocoa, therefore it provides the UIKit framework instead of AppKit. So this is why it isn’t compatible with the OS X for applications. Unix-like shekk access is not available for users and restricted for apps, making IOS not fully Unix compatible either.

Given a minor setback, IOS is still a major OS. IOS seems to be taking the lead in sales for the past 5 years.

IOS
 ios-text
 iosiOS 8 running on an iPhone 6 Plus.
Screenshot [show]
Developer Apple Inc.
Written in C, C++, Objective-C,Swift
OS family Unix-like, based onDarwin (BSD), OS X
Working state Current
Source model Closed source
Initial release June 29, 2007; 7 years ago
Latest release iPhone 4S or later
iPad 2 or later
iPad Mini 1st generation or later
iPod Touch 5th generation
8.1.3 (12B466)(January 27, 2015; 15 days agoApple TV 3rd generation7.0.3 (January 27, 2015; 15 days ago
Latest preview iPhone 4S or later
iPad 2 or later
iPad Mini 1st generation or later
iPod Touch 5th generation
iOS 8.3 beta 1 (February 9, 2015; 2 days ago)
Available in 34 languages
Update method Apple Software Update
Platforms 64- and 32-bit ARM architectures (iPhone,iPod, iPad, iPad Mini, and 2nd gen. and higherApple TV), Apple A4,Apple A5, Apple A5X,Apple A6, Apple A6X,Apple A7, Apple A8,Apple A8X
Kernel type Hybrid (XNU)
Default user interface Cocoa Touch (multi-touch, GUI)
License Proprietary EULA except for open-source components
Website www.apple.com/ios/