1. Android Operating System
By
Ramesh Pawar
&
Udayan Thakurdesai
Guided by
Mr. Anil Chinchavade

2. Contents
 Introduction
 Mobile OS
 History
 Versions & Summary
 System Requirements
 Architecture
 Why so popular
 Advantages & Disadvantages
 Conclusion & Future scope

3. Introduction
What is Android?
• A software platform and operating system for mobile devices.
• As Smart phone OS, it is based on the Linux kernel.
• Android is Framework for developing mobile apps. Framework is
set of Interfaces and classes .Framework follow the structure.
• Allows writing managed code in the Java language.
• Android is an open-source platform founded in October 2003 by
Andy Rubin and backed by Google in November 2007.
• Developed by Google and later the Open Handset Alliance (OHA).
• Unveiling of the Android platform was announced on 5 November
2007(Android beta) with the founding of OHA.

4. 4
A mobile operating system (OS) is a software that
allows smart phones, tablet PCs and other devices to
run applications and programs.
Examples
• Symbian OS
• BlackBerry OS
• Apple’s iOS
• Windows Phone OS
• Android OS
Mobile Operating System

5. HISTORY OF ANDROID
 2005
◦ Google acquires startup Android Inc. to start Android
platform
◦ Work on Dalvik VM begins
 2007
◦ Open Handset Alliance announced
◦ Early look at SDK
 2008
◦ Google sponsors 1st Android Developer Challenge
◦ T-Mobile G1 announced
◦ SDK 1.0 released

6. Android Versions
 First Version of Android.
 The focus of Android beta is testing incorporating usability.
 Android beta generally have many more problems on
speed and performance.
 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.

7.  Released on April 30, 2009.
 Bluetooth auto-pairing.
 Copy and Paste feature added in the
web browser.
 Increased speed and performance but
not upto required level.
 Released on September 15, 2009.
 Voice search and Search box were
added.
 Battery usage indicator.
 Typing is quite slower.

8.  Released on October 26,
2009.
 Bluetooth 2.1 support.
 Multiple accounts can be
added for e-mail & contact
synchronization.
 Search Functionality for
saved SMS & MMS.
 No Adobe flash media
support.

9.  Released on May 20, 2010.
 Support for Adobe Flash 10.1
 Portable hotspot
 No internet calling.
 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.
 no supports multi-core processors.

10.  Released on February 22, 2011.
 Customizable homescreen.
 Support for multi-core processors
available for tablets.
 Released on November 14, 2011.
 Control over network data.
 Improved text input and spell
check.
 Ability to shut down apps that are
using data in the background.

11.  Released on June 27, 2012
 High performance graphics
powered by OpenGL ES 3.0.
 Android 4.1 Jelly Bean improves on
the speed and simplicity
 Released on 31 October
2013
 Printing framework.
 Improved Smileys.

12. Version Summary
SR. NO. VERSION NAME REALESE DATE
1 Android Astro 1.0 2008 Sept 23
2 Banana Bread 1.1 2009 Feb 09
3 CupCake 1.5 2009 April 30
4 Donut 1.6 2009 Sept 15
5 Éclair 2.0/2.1 2009 Oct 26
6 Froyo 2.2 2010 May 20
7 GingerBread 2.3 2010 Dec 06
8 HoneyComb 3.0/3.1/3.2 2011 Feb 22
9 IcecreamSandwich 4.0 2011 Nov 14
10 JellyBean 4.1 2012 June 12
11 Kitkat 4.4 2013 Oct 31
12 Lime Pie/Lemon Pie 5.0 Mid 2014

13. System Requirements Of
Android
 MINIMUM 32 MB OF RAM
 32 MB OF FLASH MEMORY
 200MHZ PROCESSOR

14. Android Architecture

15. Why so popular?
 Free
 Open Source
 Open for customization
 Large number of
applications

16. Advantages
 Highly customizable.
 Services can run in the background.
 Notifications let you know of background
events.
 Multitasking.
 Easy access to thousands of applications
via the Google Android App Market.
 Fast and easy development.
 Many apps are free or low-cost.

17. Disadvantages
• Android operating system uses more
amount of battery as compared to
normal mobile phones.
• As there are so many user sometimes
it becomes difficult to connect all the
users.
• As we call Android is world of
applications we continuously need to
connected with the internet which is
not possible for all the users.

18. • Android is now stepping up in next
level of mobile internet.
• Android Mobile sales have becomes
more then iPhone in two years.
• Google may launch another version of
android that starts L because Google is
launching all the android versions in
the alphabetical order.
• Android have become the widely used
operating system in world.

19. And here is the latest
news…..!!!
The next major upgrade for Android, to
follow on from Android 4.4 is Android
5.0 & the name is “LEMON PIE”.
Google is thinking to release it in mid-
2014
It will be a free upgrade.

20. And here is the pic for it…..!!!!