iOS is a term used in apple mobile and was formally called iPhone OS. It is an operating system that was developed by iPhone and is currently supporting several devices like iPad and iPod touch. Check out http://en.wikipedia.org/wiki/IOS for more information.
iOS doesn#039;t stand for anything. It is a shorter term for iPhone OS. Apple changed the name of the OS from iPhone OS to iOS in 2010 because iOS now powers the iPhone, iPad, iPod touch, and Apple TV. Apple also wanted to shorten the long name.
iOS (previously iPhone OS) is a mobile operating system developed and distributed by Apple Inc. Originally unveiled in 2007 for the iPhone, it has been extended to support other Apple devices such as the iPod Touch (September 2007), iPad (January 2010), iPad Mini (November 2012) and second-generation Apple TV (September 2010). Unlike Microsoft's Windows Phone and Google's Android, Apple does not license iOS for installation on non-Apple hardware. The user interface of iOS is based on the concept of direct manipulation, using multi-touch gestures. Interface control elements consist of sliders, switches, and buttons. Interaction with the OS includes gestures such as swipe, tap, pinch, and reverse pinch, all of which have specific definitions within the context of the iOS operating system and its multi-touch interface. learn how to handle ios systems better here: http://www.smallurl.in/ipadlessons