Thursday, July 1, 2010

What is Android ?

Android is Google's operating system for mobile devices.

It was initially developed by Android Inc., a firm later purchased by Google, and lately by the Open Handset Alliance.

Programmed in C (core), C++ (some third party libraries), Java (UI)

How does it Works ?

Android operating system software stack consists of Java applications running on a Java based object oriented application framework on top of Java core libraries running on a Dalvik virtual machine featuring JIT compilation. Libraries written in C include the surface manager, OpenCore media framework, SQLite relational database management system, OpenGL ES 2.0 3D graphics API, WebKit layout engine, SGL graphics engine, SSL, and Bionic libc.

The Android operating system consists of 12 million lines of code including 3 million lines of XML, 2.8 million lines of C, and 2.1 million lines of Java.

Other Info:

Initial release               : 21 October 2008
Supported platforms    : ARM, MIPS, Power Architecture, x86
Kernel type                  : Monolithic (modified Linux kernel)
License                        : Apache 2.0 and GPLv2

Courtesy: wikipedia

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