Android is a software stack Operating System Middleware Applications

2. CONTENTS
2. MOBILE OPERATING SYSTEM
3. ANDROID
4. HISTORY
1. OPERATING SYSTEM
5. EVOLUTION
6. ARCHITECTURE
7. FEATURES
9. CONCLUSION
8. COMPARISON

3. Operating System
 Interface Between User and Machine
(System)
Program designed to run other
programs/Applications
Backbone Of Any System
Examples:
Windows 7
Win XP
Vista
Mac OS

4. Mobile Operating System
The operating system that controls
a mobile device .

5. Devices
Smartphones Like IPhone, Sony Ericsson
Xperia , Htc Desire.

6. Devices
Tablet Computers
like
 Apple I pad
 Samsung
Galaxy Tab.

7. Software Platforms
Android
Symbian
Blackberry
iOS
Windows Mobile

8. What is ANDROID?
 Android is a software stack
Operating System
Middleware
Applications
 Based On Linux Kernel
 Initially developed by Android Inc.
 Later purchased by Google
 Most Customizable OS
 Based on Java.
 The icon of Android is named Bugdroid.

9. Android
OPEN SOURCE OS
 As a Developer: Develop Apps. Download and compile the code.
Code can be Modified and reused.
Developers can create applications for the platform using the Android
SDK.
Applications are written using the Java programming language.
 As a device manufacturer: They get fully featured OS for free.
Customize OS to suit their particular hardware design.
 Fastest growing mobile OS
Google now activates nearly 600,000 Android devices every single
day .

10. History
 October 2003
Android Inc. was founded in California
Andy Rubin
Rich Miner
Nick Sears
Chris White
 August 2005
Google acquired Android Inc.
 5 Nov 2007
OHA was Formed .

11. Open Handset Alliance
Group of Hardware and Software Developers like
Google, HTC, Intel, Motorola
 The development of Android is a collaborative work between Google
and the others members of the Open Handset Alliance.
 5 Nov 2007-Open Handset Alliance also unveiled their first product,
Android.

12. Evolution
Android 1.0 Alpha Sep 2008
First Android Device:
HTC DREAM
Android market October 2008
Android 1.1 Beta February 2009

13. Recent Releases
April 09 Sep09 Oct 09 May10 Dec 10 Jan11 Oct11

14. ANDROID ARCHITECTURE
Architecture of Android OS

15. Linux Kernel
 Android runs on Linux (version 2.6).
 Linux Kernel provides :
 Hardware abstraction layer
 Memory management
 Process management
 Networking
 Security

16. Libraries
 Written in C/C++
 Surface manager - Handling UI.
 Media Libraries- offer support for major audio/video
files.
 Display/Graphics(SGL)-for 2D graphics.
 OpenGL ES – 3D Graphics Library.
 SQLite –Storage-RDB engine.
 WebKit–Display HTML ,same engine used in Google
chrome browser or Apple’s Safari Browser.

17. Android Runtime
 Dalvik VM is Google’s implementation of Java, Optimized for mobile
devices
 Android Based on Java Lang
 Dalvik VM runs .dex files
 .Class and .jar files converted to .dex
 More efficient than Class files

18. Application Framework
Building blocks Used to create applications.
Activity manager
–Manages the life cycle of applications
Content Provider
– Share data between applications
Package Manager
– Track of the applications
Telephony Manager
–Deals with calling applications

19. Applications
Android devices are prepackaged with applications like
a)Email client (Gmail )
b)SMS program,
c)Calendar
d)Browser
e)Market & others….

20. Android Features
 Connectivity Technologies: GSM,CDMA, EDGE, 3G
Bluetooth, and Wi-Fi.

21. Android Features
MULTI-TASKING MULTIPLE LANGUAGE SUPPORT

22. Android Features

Media support :All major audio and video (MPEG4, H.264,
MP3, AAC, AMR, JPG, PNG, GIF)
Graphics: 2D and 3D
Tethering: Wi-Fi hotspot.
Android Market:
Free and paid.
3rd party apps
Easy to Install.
Other Supported Features:
GPS (Global Positioning System)
Touch screen And Physical Keyboard
Accelerometer for motion sensing
Pre Installed Social Apps
FM Radio

23. COMPARISON
 Android
 BlackBerry
 iOS
 Symbian

24. Performance
Performance: Android Supports Dual
Core Processors

25. Application Support
Application Support: Apple’s App store
Leads

26. Device Support
 Device Support Android OS can be used on large number of
devices than any other mobile operating systems.
 Android is Device Friendly OS.

27. Source
Source
• Android Google Open source
• Symbian Nokia Open Source
• Blackberry RIM Closed source
• iOS Apple Closed Source
•

28. Conclusion
Growing Technology
Initially on mobile handsets, Later on Tablets
FUTURE: GPS devices,
Cars,
Refrigerators
And who-knows-what else.