Android is an open-source operating system used for mobile devices. It was developed by Android Inc, which was acquired by Google in 2005. The Open Handset Alliance was formed to develop Android and lower costs for mobile devices. The first Android phone, the HTC Dream, was released in 2008. Since then Android has continued to be developed and improved with new versions named after desserts. It provides an open platform for developers and allows customization by manufacturers.

2. Contents
1 List of OS used in mobile devices
2 What is Android?
3 History
4 Open Handset Alliance
5 Architecture
6 Android s/w development
7 What happens in today’s Android
phone?
8 Advantages & Disadvantages
9 Conclusion
10 Reference

3. -Androi OS
-Apple iOS
-BlackBerry OS
-Windows OS
-Symbian OS
-BADA OS
-Palm OS
-Open WebOS
-Maemo OS
-MeeGo

4. In English dictionary the word android
means that-
1 An automaton that resembles a
human being
2 mechanical man or
humanoid…….etc
• A software platform and
operating system for mobile
devices

5. Android Inc was founded in Palo Alto,
California,United States by Andy
Rubin,Rich Miner,Nick Sears & Chris White
Google acquired Android Inc
The Open Handset Alliance, a consortium
of several companies was formed
Android beta SDK released
- Oct 2003
-Aug2005
-5thNov2007
-12thNov2007

6. • Devoted to advancing open standards for mobile devices
• Develop technologies that will significantly lower the cost of
developing and distributing mobile devices and services

7. The first Android device HTC Dream(g1), featuring
Android1.0 was released on 23rd Sept 2008
Android 1.0-
Integration with google service
Web browsers to show, zoom & pan full HTML &
XHTML web pages, multiple pages show as widows
Android market application downloads & updates
Multitasking, instant messaging ,wi-fi & Blue-tooth.
Android 1.1 –
Android 1.1 update for Android was released for T-
mobile G1 only 9th Feb 2009

8. Since April 2009
it’s version has been developed under a codename based on
dessert or sweet treats.
They are in alphabetical order:-
Cupcake
Donut
Éclair
Froyo(frozen yogurt)
Gingerbread
Honeycomb
Ice Cream Sandwich
Jelly Bean
Kitkat
Lollipop

9. Based on Linux kernel 2.6.27,the
official 1.5 (cupcake) was released on
30th April 2009
A new soft-keyboard with text-
prediction
Ability to record & watch videos
through camcorder mode
Directly upload videos to youtube
and pictures to Picasa.
New widgets & folders that can
populate the home screens
Bluetooth A2DP & AVRCP support
Animated screen transitions
Android1.5
(cupcake)

10. Based on Linux kernel 2.6.29 the 1.6
(donut) was released on 15th Sept 2009
Support for WVGA screen resolution
Updated CDMA support
Quick search box & voice search
Multilingual text-to-speech function
An improved android market
experience
Integrated camera & gallery, toggle
between still & video captures modes
Android1.6
(donut)

11. Based on Linux kernel 2.6.29 the
2.0(Éclair) SDK was released on 26th
Oct 2009
Optimized h/w speed
Support for more screen sizes &
resolution & also better contrast ratio
for background
New contact list
Microsoft exchange support for
syncing of email
Bluetooth 2.1 support
New browser user interface &
support for HTML5
Improved google maps 3.1.2
Built in flash support for camera
Android 2.0
(Éclair)

12. Based on the Linux kernel 2.6.32 on
the 20th May 2010, the Android
2.2(Froyo) SDK was released
General android OS speed, memory
and performance optimizations
Adobe Flash 10.1 support
Additional application speed
improvements courtesy of JIT(Just In
Time) implementation
Wifi hotspot functionality
Browser application is integrated
with chrome’s V8 javascript engine
Android market with auto updating
& users can give the application error
report
Android 2.2
(Froyo)

13. Based on the Linux kernel 2.6.35
on 6th Dec 2010, the
2.3(Gingerbread) SDK was
released
Focus on game development
Concurrent garbage
collection(minimized application
pauses, smoother animation,
increased responsiveness
Support for SIP VoIP telephony
Download manager for long-
running downloads
Redesigned multi-touch s/w
keyboard
Android 2.3
(Gingerbread)

14. Based on the Linux kernel 2.6.36 the
3.0(Honeycomb)SDK was released for
tablets on 22nd Feb 2011
Specifically optimized for tablets &
with larger screen sizes
Three dimensional desktop with
redesigned widgets
Refined multitasking
Support for video chat using Google
talk
Support for multi-core processor
Android 3.0
(Honeycomb)

15. =>Amazing features
Font System: It is specially designed
for high resolution screen & brings a
magazine like a feel the whole interface
Screenshots: Finally Android will allow
to take screenshots without rooting the
smart phone or installing any third
party application Just hold down
volume key & power button to capture
screenshots
Instant Voice: It will not take long to
transcribe your words Just speak it & it
instantly transforms it into text
Android 4.0
(Ice-cream
Sandwich)

16. Android Beam: This feature is based on NFC(Near
Field Communication) & it allow two android smart
phones to securely exchange webpages, contacts, media
or even application
Unified tablet & smart phone API
Web browser: It comes with brand new Chrome mobile
web browser It syncs with your desktop or laptop chrome
bookmarks, it can save pages for offline reading & it can
open up to 16 tabs at the same time
Improved Camera: Some great new camera features, a
camera UI option to edit images using multiple effects &
speed of capturing is very fast & also improved video
recording mode

17. Brought out on 9th July 2012
With great features along with it
Android 4.1 Jelly Bean is the slickest,
fastest, most responsive release of
Android yet.
Voice Search
Expandable Notifications
Predictive Keyboard
Offline Speech Recognition
Face Unlock Liveness Check
Android 4.1
( Jelly Bean)

18. =>Features:
Unlimited Home Screen Panels
Immersive Display
Support for Integrated Pedometer
Full-Screen Album And Movie Art
Combined With Controls
Enhanced Caller ID by Google
Quickoffice Integration
Message Consolidation
Contact Prioritization
Emojis
Android 4.4
( Kitkat)

19. =>Features:
Better WiFi and Bluetooth controls
Better Sound profiles
Better device protection
Notifications can be flicked away
No more crappy Wi-Fi connections
Android 5.0
( Lollipop)

21. The android OS can be used as an operating system
for cellphones, netbooks and tablets
First phone HTC Dream released on 22nd Oct 2008
The world’s first TV running Android, called
Scandinavia, has been also launched by company
people of LAVA

22. =>Tools:
JDK
ADT Bundle
Eclipse
Android Studio
SQLite

24. It takes all the Google products with you
Search the web
Navigate your world
Connect & Share
Be entertained
Create & Collaborate

25. Google Wallet
Save time
The new version of Google wallet support all
credits & debit cards, from Visa, MasterCard,
American express and Discover
Just enter the card you want to use , and then
tap your phone to pay wherever MasterCard
pay pass is accepted
Stay safe and secure
Lock your Wallet with a PIN that only you know, keeping
you safe and secure. And if you lose your phone, remotely
disable your mobile wallet from the Google Wallet
management center.

26. 1 Open-
Android allows you to access core mobile
device functionality through standard API calls
2 All applications are equal-
Android doesn’t difference between the
phone’s basic & third party application even the
dialer or home screen can be replaced
3 Fast & easy development-
The SDK contains what you need to build
and run Android applications including different
tools

27. 1 Security-
Making source code available to everyone
indirectly invites the attention of black hat hackers
2 Open Source-
A disadvantage of open-source development is
that anyone can examine the source code to find
vulnerabilities & write exploits
3 Login-
Platform doesn’t run on an encrypted file system &
has vulnerable log-in

28. Android is truly open, free development
platform based on Linux and open source.
Handset makers can use & customize the
platform without paying a royalty.
Android is open to all: industry, developers
and users
Participating in many of the successful
open source projects
Aims to be as easy to build for as the web
Google Android is stepping into the next
level of Mobile Internet

29. www.android.com
www.wikipedia.com
www.google.com