1. Presentation on Android Operating System

2. INDEX Opportunities Challenges Operating system(OS).
Different types of OS.
What Is Android.
Features of Android.
Different Version of Android.
Gingerbread
Ice Cream Sandwich
Jelly Been
Opportunities
Challenges

3. What is operating system ??
A mobile operating system is the operating system that operates a smart phone, tablet, PDA, or other digital mobile devices. Modern mobile operating systems combine the features of a personal computer operating system with touch screen, cellular, Bluetooth, Wi-Fi, GPS mobile navigation, camera, video camera , speech recognition, voice recorder, music player, Near field communication, personal digital assistant (PDA), and other features.

4. Some software platforms for mobile
Android from Google Inc.
BlackBerry OS from RIM
iOS from Apple Inc.
S40 (Series40) from Nokia
Symbian OS from Nokia
Windows Phone from Microsoft

5. What is Android ?
Android is a Linux-based operating system designed primarily for touch screen mobile devices such as smart phones and tablet computers. Initially developed by Android, Inc., whom Google financially backed and later purchased in 2005, Android was unveiled in 2007 along with the founding of the Open Handset Alliance: a consortium of hardware, software, and telecommunication companies devoted to advancing open standards for mobile devices . The first Android-powered phone was sold in October Android is the world's most popular mobile platform.

6. Android The World’s Most Popular Platform
Millions of people already use Android because it makes your mobile device so much more powerful and useful. On Android, the home screen, web browser, and everything in between are designed to make your life easier. And because Android is open, you can create a unique mobile experience that’s just right for you.

7. Widgets
Put the important stuff right within reach and interact with your favorite apps directly from your home screen with widgets — see the latest sport scores, view your favorite photos, check the weather or peek at your inbox all without having to open different apps or leave the home screen.

8. Multi-tasking Notifications
An easy-to-read notification tray gives you quick access to your calls, incoming texts, and new s in a non-intrusive way.
Multi-tasking
With Android, you can quickly and seamlessly switch between apps and pick up whatever you were doing. Juggling multiple tasks at once on a mobile device has never been easier.

9. Voice typing and Actions
Control your Android device with your voice. Simply touch the microphone on the keyboard and start talking to write s, SMS, or any other text — more than 30 languages supported. Text appears in real time, so there’s no waiting.
Photos and videos
Capture special moments with great photos and videos, explore your shots and quickly share your favorites in any way that you want.

10. Different Version Of Android
Code Name
Release Date
4.2
Jelly Bean
November 13, 2012
4.1.x
July 9, 2012
4.0.x
Ice Cream Sandwich
December 16, 2011
3.2
Honeycomb
July 15, 2011
3.1
May 10, 2011
2.3–2.3.2
Gingerbread
December 6, 2010
2.3.3–2.3.7
February 9, 2011
2.0–2.1
Éclair
October 26, 2009
1.6
Donut
September 15, 2009
1.5
Cupcake
April 30, 2009

11. Gingerbread
Gingerbread -- Android despite being a "dot" release. actually brought some fairly major changes to the Android platform
Cosmetically, nothing changed that much. The notification bar at the top of the screen went black, and the signal strength and battery indicators turned green. Many had been hoping Gingerbread would contain the handiwork of Matias Duarte, who led Palm's webO SUI and now is user experience director for Android.m.

12. Gingerbread New User Features
UI refinements for simplicity and speed
Faster, more intuitive text input
One-touch word selection and copy/paste
Improved power management
Control over applications

13. Ice Cream Sandwich
Android 4.0 (Ice Cream Sandwich) is the latest version of the Android platform for phones, tablets, and more. It builds on the things people love most about Android — easy multitasking, rich notifications, customizable home screens, resizable widgets, and deep interactivity — and adds powerful new ways of communicating and sharing.

14. What’s New in Ice Cream Sandwich
Refined, evolved UI
Home screen folders and favorites tray
Resizable widgets
New lock screen actions
Quick responses for incoming calls
Improved text input and spell-checking
Powerful voice input engine
Designed for accessibility
Control over network data

15. About Jelly Bean
Android 4.1, Jelly Bean, is the fastest and smoothest version of Android yet. Jelly Bean improves on the simplicity and beauty of Android 4.0, and introduces a new Google search experience on Android.
Everything in Jelly Bean feels fast, fluid, and smooth.
Jelly Bean features improved performance throughout the system
Jelly Bean has more reactive and uniform touch responses, and makes your device even more responsive by boosting your device's CPU instantly when you touch the screen.

16. What's new in Jelly Bean Accessibility Browser and Web View Calendar
Camera and Gallery
Keyboard
Messaging and Talk
News and Weather
System
Widgets

17. Challenges CPU typically runs 500-600 Mhz.
RAM available to an App may only be a few megabytes
Disk (flash) access is very slow
Lifecycle - apps must pause/quit often, and restore to give the illusion that they are always running
UI design
*typical screen may be HVGA (320x480)
*may be in portrait or landscape
*very high DPI - small text may not be readable
*touch resolution is very low (~25 pixel)
Network access may be slow and (very) intermittent

18. Opportunities 100s of millions of mobile phone users
Very high growth, esp. in Asia
Wild wild west" of application development
no dominant 3rd party developers.... Yet
what will the killer app categories be?
what does it mean to have any app + the internet in your pocket?
You can develop for it today!