iOS is a mobile operating system developed by Apple that was originally released in 2007 for the iPhone, iPod Touch, and Apple TV. It is derived from OS X and shares the Darwin foundation. iOS apps are mainly designed using Objective C and Swift programming languages. iOS has four abstraction layers: Cocoa Touch for graphical user interfaces, a Media layer for multimedia, Core Services for fundamental system interfaces, and Core OS for low-level system functions like memory, threads, and networking.

1. From:
Ravi Ranjan
(1309010119)
To:
Shashi Bhusan
Vishwakarma

2. iOS is a mobile operating system developed and distributed by
Apple Inc. It was originally released in 2007 for the iPhone,
iPod Touch, and Apple TV. iOS is derived from OS X, with
which it shares the Darwin foundation. iOS is Apple's mobile
version of the OS X operating system used in Apple
computers. iOS apps are mainly designed in two languages
namely:
•Objective C
•Swift

3. The Apple was founded in
April 1st 1976 and released with
first APPLE(1) computer.
Steve Jobs
Steve Wozniak
Ronald Wayne

4. History Of iOS

7. Ios Technology Layer
 In iOS, there are four abstraction layers:
Implementation of graphical event-driven application
in ios with the framework is performed in the Cocoa
touch layer.
Media Layer allows you to create the best multimedia
experience available on the mobile device with
framework.
Core Service Layer contains the fundamental interfaces
for ios, for accessing files, network sockets and so on.
Core OS layer manages the Virtual Memory, thread, the
file system, the network, interprocess communication
with the framework in the core os layer.