What is Android? Features of Android ,Environment Setup & android tools

Android:

• Android is an open source and Linux-based Operating System for mobile devices such as smart phones  and tablet computers.
• Developed by the Open Handset Alliance, led by Google
• The first beta version of the Android Software Development Kit (SDK) was released by Google in 2007; the first commercial version, Android 1.0, was released in September 2008.
• The source code for Android is available under free and open source software licenses

Features of Android:

Beautiful UI	Android OS basic screen provides a beautiful and intuitive user interface.
Connectivity	GSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth, Wi-Fi, LTE, NFC and WiMAX.
Storage	SQLite, a lightweight relational database, is used for data storage purposes.
Media Support	H.263, H.264, MPEG-4 SP, AMR, AMR-WB, AAC, HE-AAC, AAC 5.1, MP3, MIDI, Ogg ,Vorbis, WAV, JPEG, PNG, GIF, and BMP
Messaging	SMS and MMS
Web Browser	Based on the open-source WebKit layout engine, coupled with  Chrome's V8 JavaScript engine supporting HTML5 and CSS3.
Multi-Touch	Android has native support for multi-touch
Multi-Tasking	User can jump from one task to another and same time various application can run simultaneously.

Environment Setup:

Java Development Kit (JDK)
Native Java support & libraries , program development environment for writing Java applets and applications

Android Development Kit (SDK)
Includes sample projects with source code, development tools, emulator, and required libraries to build Android application.

IDE for Java Developers (Eclipse / Android Studio)
source code editor, build automation tools and a debugger

Android Development Tools (ADT) Plug-in
Plug-in for IDE ,setup new Android, projects, create an application UI, add packages based on the Android Framework API, debug 
Android Virtual Device  (AVD)

Android Tools:

Java SE Development Kit 8

Check for OS type , 32 bit / 64 bit

Download & set path / Environment Variables Setting

IDE & SDK

Eclipse or Android Studio

Android Studio

Packages the SDK, ADT & AVD in single installer

One setup does all; download , install & run as administrator