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What is Android and their Version and Feature of Android ?

WHAT IS ANDROID?

Android is a mobile operating system that is based on a modified version of Linux. It was originally 
developed by a startup of the same name, Android, Inc. In 2005, as part of its strategy to enter the 
mobile space, Google purchased Android and took over its development work (as well as its develop-ment team). 

Google wanted Android to be open and free; hence, most of the Android code was released under 
the open-source Apache License, which means that anyone who wants to use Android can do so by 
downloading the full Android source code. Moreover, vendors (typically hardware manufacturers) 
can add their own proprietary extensions to Android and customize Android to differentiate their 
products from others. This simple development model makes Android very attractive and has thus 
piqued the interest of many vendors. This has been especially true for companies affected by the phe-nomenon of Apple’s iPhone, a hugely successful product that revolutionized the smartphone industry. Such companies include Motorola and Sony Ericsson, which for many years have been developing 
their own mobile operating systems. When the iPhone was launched, many of these manufacturers 
had to scramble to find new ways of revitalizing their products. These manufacturers see Android as 
a solution — they will continue to design their own hardware and use Android as the operating sys-tem that powers it. 

The main advantage of adopting Android is that it offers a unified approach to application development.Developers need only develop for Android, and their applications should be able to run on numerous different devices, as long as the devices are powered using Android. In the world of smartphones, appli-cations are the most important part of the success chain. Device manufacturers therefore see Android as their best hope to challenge the onslaught of the iPhone, which already commands a large base of applications.

Android Versions

Android has gone through quite a number of updates since its first release.See the below image

Android Version

Features of Android

As Android is open source and freely available to manufacturers for customization, there are no fixed
hardware and software configurations. However, Android itself supports the following features:
➤➤ Storage — Uses SQLite, a lightweight relational database, for data storage. i will discusses
data storage in more detail later.
➤➤ Connectivity — Supports GSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth (includes
A2DP and AVRCP), WiFi, LTE, and WiMAX. i will discusses networking in more detail later.
➤➤ Messaging — Supports both SMS and MMS. i will discusses messaging in more detail later.
➤➤ Web browser — Based on the open-source WebKit, together with Chrome’s V8 JavaScript engine
➤➤ Media support — Includes support for the following media: H.263, H.264 (in 3GP or MP4
container), MPEG-4 SP, AMR, AMR-WB (in 3GP container), AAC, HE-AAC (in MP4 or
3GP container), MP3, MIDI, Ogg Vorbis, WAV, JPEG, PNG, GIF, and BMP
➤➤ Hardware support —  Accelerometer Sensor, Camera, Digital Compass, Proximity Sensor, and GPS
➤➤ Multi-touch — Supports multi-touch screens
➤➤ Multi -tasking — Supports multi-tasking applications
➤➤ Flash support — Android 2.3 supports Flash 10.1.
➤➤ Tethering — Supports sharing of Internet connections as a wired/wireless hotspot.