The document discusses Android, an open-source operating system for mobile devices. It lists the contents as introduction, history, versions, architecture, challenges, merits and demerits, and limitations. It then provides details on the introduction of Android, its history of development by Google, and lists major versions from Beta to Kit Kat 4.4, describing new features with each release.

2. Members of presentation
• 234 : Akshay
• 235 : Ashwini
• 236 : Nasir
• 237 : Tejas
• 238 : Vinayak
• 239 : Amit
• 240 : Harish
• 241 : Deepak
• 242 : Krishna
• 243 : Palak

3. Contents :
• Introduction
• Mobile OS
• Android History
• Android Versions
• Models
• Architecture
• Challenges
• Merits and Demerits
• Limitations
Conclusion and future Scope

4. INTRODUCTIO
• Android is an open source operating system, created by
Google specifically for use on mobile devices (cell
phones and tablets) Based on Linux 2.6 kernel
• Can be programmed in C/C++ but most app development
is done in Java (Java access to C Libraries via JNI (Java
Native Interface))
• Supports Bluetooth, Wi-Fi, and 3G and 4G
networking

5. • Android powers hundreds of millions of mobile
devices in more than 190 countries around the
world. It's the largest installed base of any
mobile platform and growing fast—every day
another million users
• Android gives you a world-class platform for
creating apps and games for Android users
everywhere, as well as an open marketplace for
distributing to them instantly.

6. • Every day more than 1 million new Android
devices are activated worldwide.

7. History :
• The Android™ was built upon the open Linux
kernel, and developed by Android, Inc., which is
owned by Google.
• Android was purchased by the GOOGLE in
AUGUST,2005 for 50 million $.
• Android was developed by the Andy Rubin, Rich
Miner, Nick Sears and Chris White.
• It was developed in Palo Alto, California.

8. Types of Mobile Operating System :
A mobile operating system (OS) is a software that
allows smart phones, tablet PCs and other devices
to run applications and programs.
• Symbian OS :
• BlackBerry OS :
• Apple’s iOS :
• Windows Phone OS :
• Android OS :

9. Features in ANDROID
General :-
• Messaging : SMS and MMS are available forms of messaging,
including threaded text messaging and Android Cloud To Device
Messaging(C2DM) and now enhanced version of C2DM,
Android Google Cloud Messaging (GCM) is also a part of Android
Push Messaging service.
• Multi-touch : android support multi touch .
• Multitasking : Multitasking of applications, with unique
handling of memory allocation, is available.
• Multiple language support : Android supports multiple
languages.

10. Voice based features : Google search through voice has
been available since initial release. Voice actions for calling,
texting, navigation, etc. are supported on Android 2.2
onwards. As of Android 4.1, Google has expanded Vce
Actions with ability to talk back and read answers from
Google's Knowledge Graph when queried with specific
commands. The ability to control hardware has not yet been
implemented.
Connectivity : Android supports connectivity technologies
including GSM/EDGE, Wi-Fi, Bluetooth, LTE, CDMA
Media support : Android supports the following audio/video/still
media formats: WebM, H.263, H.264, AAC, HE-
AAC (in 3GP or MP4 container), MPEG-4 SP, AMR, AMR-WB (in 3GP
container), MP3, MIDI, Ogg
Vorbis, FLAC, WAV, JPEG, PNG, GIF, BMP, WebP.

11. Android Versions
 Android Beta :
 First Version of Android.
 The focus of Android beta is testing incorporating
usability.
 Android beta will generally have many more problems on
speed and performance.
 Android Astro 1.0 :
 First full version of android.
 Released on September 23, 2008.
 Wi-Fi and Bluetooth support.
 Quite slow in operating.
 copy and paste feature in the web browser
is not present.

12.  Android Cupcake 1.5 :
 Released on April 30, 2009.
 Added auto-rotation option.
 Copy and Paste feature added in the web
browser.
 Increased speed and performance but not up to
required level.
 Android Donut 1.6 :
 Released on September 15, 2009.
 Voice search and Search box were added.
 Faster OS boot times and fast web browsing
experience.
 Typing is quite slower.

13.  Android Éclair 2.0/2.1 :
 Released on October 26, 2009.
 Bluetooth 2.1 support.
 Improved typing speed on virtual keyboard, with
smarter dictionary.
 no Adobe flash media support.
 Android Froyo 2.2 :
 Released on May 20, 2010.
 Support for Adobe Flash 10.1
 Improved Application launcher with better
browser
 No internet calling.

14.  Android Gingerbread 2.3 :
 Released on December 6, 2010.
 Updated User Interface with high efficiency and speed
 Internet calling
 One touch word selection and copy/paste.
 New keyboard for faster word input.
 More successful version of Android than previous
versions.
 not supports multi-core processors.
 Android Honeycomb 3.0 :
 Released on February 22, 2011.
 Support for multi-core processors
 Ability to encrypt all user data.
 This version of android is only available for tablets.

15.  Android IceCreamSandwich(ICS) 4.0 :
 Released on November 14, 2011.
 Virtual button in the UI.
 A new typeface family for the UI, Roboto.
 Ability to shut down apps that are using data in the
background.
 Android JellyBean 4.1 :
 Released on June 27, 2012.
 Latest version of Android.
 Smoother user interface.

16.  Android Kit Kat 4.4 :
 Released on October 31, 2013.
 Latest version of Android.
 Smoother user interface.
 Wireless printing capability
 New framework for UI
transitions
 (MAP) support
 Wi-Fi and mobile data
activity (TX/RX) indicators
are moved to quick settings
 Expanded functionality for
notification listener services
 Web Views now based
on Chromium engine

17. What next ??