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By-Kavita Khandekar
What is Android?
 It is a software cluster for mobile devices that

include a operating system.

 Key Applications and middle ware.
 An Open Handset Alliance(OHA) Project.
 Based on Linux Kernel 3.0
Timeline
 Open handset alliance announces Android on November 5 th ,

2007.
 Android market (Open content distribution system)
announced on august 28 th , 2008 to connect users and
developers.
 Android 1.0 release 1 available on September 23 rd , 2008 and
android developers have access to first 1.0 compatible .

 Android open source project released android source on

October 21 st , 2008.
 World’s first Android mobile (T-Mobile G1) launched on
October 22 nd , 2008.
What is Open Handset Alliance?
 It's a consortium of several companies.
 Devoted to advancing open standards for mobile devices.
 Develop technologies that will significantly lower the

cost of developing and Distributing mobile devices and
services.
Architecture diagram
Android Versions
Versions

Names

1.0

Beta

1.1

Beta

1.5

Cupcake

1.6

Donut

2.0

Eclair

2.1

Eclair

2.2

Froyo

2.3

Gingerbread

3.0

Honeycomb

3.1

Honeycomb

3.2

Honeycomb

4.0

Ice-Cream-Sandwich
Ice Cream Sandwich

Gingerbread + Honeycomb
Linux Kernel
 Works as a Interface
 Device drivers
 Memory management
 Process management
 Networking
Libraries
 C/C++ libraries
 Interface through Java
 2D and 3D graphics

 Media codecs, SQLite, Browser engine
Application Framework
 API interface
 Activity manager –manages application life cycle.
 Content Providers Content Providers enable

applications to access data from other applications
1. An Open Accessory API
 Allows external USB hardware (an Android USB

accessory) to interact with an Android-powered
device in a special "accessory" mode
2. Cloud Music
 Users will be able to upload their libraries, playlists,

etc.

 Access them virtually anywhere from various

devices whether online or offline
3. One OS for all
 Bridge the gap between tablets and phones
4. NFC Sharing (Near Field
Communication)
 Bring the devices together and the data shared

without launching an application or navigating
through the UI.
5. Gaming Improvements
 Neat 3D stuff

 Better processor optimization
6.Expanding, Resizable
widgets
 For enhanced multitasking and visual access to

applications.
7. Ability to be a USB host

 We can hook up keyboards, mouse etc.
8. Face Detection
 Allow better coordination of a video

chat/conference session by being able to highlight
the speaker over and above the listener.

 Advanced Face-record
9. Uses a single UI interface
 UI inspiration from Honeycomb for Phone form

factor

 Holographic UI
 Multitasking UI
Advantages
 Free to customize
 All applications are equal
 A more mature platform

 More apps (because of its age)
 Fast and easy development
Limitations
 Very unstable and often hang or crash
 Extremely inconsistence in design among apps

 Difficult to use because if the above
 Relatively few if any update because the updates

come from phone manufacturer not Google.
Conclusion
 Solid, proven, popular, open platform
 Used on wide range of devices
 Support from Google, telecom

 Low barriers to entry
 Major opportunity for new developers
 Creativity, hard work
References
 www.gizmodo.com
 www.knowyourmobile.in
 www.readwriteweb.com

 www.techradar.com
Ice cream-sandwich
Ice cream-sandwich

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