Android is a widely used mobile operating system developed by Google and the Open Handset Alliance. It has seen many updates since its initial 2007 release, with each new version codenamed after a dessert item in alphabetical order. The document provides details on the key features and notable devices for each major Android version from 1.5 Cupcake to 4.4 KitKat.

1. Presented by :-
Sandeep Gupta
ALL ABOUT ANDROID SYSTEM

2. ANDROID SYSTEM
World is contracting with the growth of mobile phone technology. As the number of
users is increasing day by day, facilities are also increasing. Starting with simple regular
handsets which were used just for making phone calls, mobiles have changed our lives
and have become part of it. Now they are not used just for making calls but they have
innumerable uses and can be used as a Camera , Music player, Tablet PC, T.V. , Web
browser etc . And with the new technologies, new software and operating systems are
required.
What is Android
Operating system have developed a lot in last 15 years. Starting from black and white phones to
recent smart phones or mini computers, mobile OS has come far away. Especially for smart phones,
Mobile OS has greatly evolved from Palm OS in 1996 to Windows pocket PC in 2000 then to
Blackberry OS and Android.
One of the most widely used mobile OS these days is ANDROID. Android is a software bunch
comprising not only operating system but also middleware and key applications. Android Inc was
founded in Palo Alto of California, U.S. by Andy Rubin, Rich miner, Nick sears and Chris White in
2003. Later Android Inc. was acquired by Google in 2005.

3. Applications
ANDROID SYSTEM
These are the basics of Android applications:
1 Android applications are composed of one or more application components
(activities, services, content providers, and broadcast receivers)
2 Each component performs a different role in the overall application
behavior, and each one can be activated individually (even by other
applications)
3 The manifest file must declare all components in the application and
should also declare all application requirements, such as the minimum version
of Android required and any hardware configurations required
4 Non-code application resources (images, strings, layout files, etc.) should
include alternatives for different device configurations (such as different
strings for different languages)

4. ANDROID SYSTEM
The version history of the Android operating system began with the release of the Android beta in
November 2007. The first commercial version, Android 1.0, was released in September 2008. Android
is under ongoing development by Google and the Open Handset Alliance (OHA), and has seen a
number of updates to its base operating system since its initial release.
Since April 2009, Android versions have been developed under a confectionary -themed code name
and released in alphabetical order; the exceptions are versions 1.0 and 1.1:
1.) Android alpha (1.0)
2.) Android beta (1.1)
3.) Cupcake (1.5)
4.) Doughnut (1.6)
5.) Eclair (2.0–2.1)
6.) Froyo (2.2–2.2.3)
7.) Gingerbread (2.3–2.3.7)
8.) Honeycomb (3.0–3.2.6)
9.) Ice Cream Sandwich (4.0–4.0.4)
10.) Jelly Bean (4.1–4.3.1)
11.) KitKat (4.4–4.4.4)
12.) “L” release (developer preview)
On September 3, 2013, Google announced that 1 billion activated devices now use the Android OS
worldwide. The most recent major Android update was KitKat 4.4, which was released to commercial
devices on November 22, 2013, via an OTA updates

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8. ANDROID SYSTEM
Android 1.5 Cupcake
Introduced: April 30, 2009
Key features in this version of Android: Integration of
home screen widgets, support for folders on home
screen, stereo Bluetooth support, copy/paste in web
browser, video recording and playback.
Notable devices of the day: HTC Hero, T-Mobile G1, T-Mobile
Cliq, Samsung Moment, LG Eve, Motorola
Backflip

9. ANDROID SYSTEM
Android 1.6 Donut
Introduced: September 15, 2009
Key features in this version of Android: Quick
search box, updated interface for camera, camcorder,
and gallery, updated Google Play (Android Market),
battery usage indicator, text-to-speech engine,
Notable devices of the day: LG Optimus, Motorola
Devour, Samsung Behold II, Samsung Galaxy, Sony
Ericsson Xperia X10, Garminfone

10. ANDROID SYSTEM
Android 2.0 – 2.1 Eclair
Introduced: October 26, 2009
Key features in this version of Android: Google
Maps Navigator (beta), updated browser, support for
multiple accounts, improved keyboard, SMS search,
Exchange support
Notable devices of the day: Motorola Droid,
Motorola Charm, Motorola Flipout, Samsung Galaxy
S, Acer Liquid E, HTC Desire

11. ANDROID SYSTEM
Android 2.2 – 2.3 Froyo
Introduced: May 20, 2010
Key features in this version of Android: Support for Adobe
Flash, portable hotspots, multiple keyboard languages, speed
and performance improvements, enhanced Microsoft Exchange
support
Notable devices of the day: Nexus One, HTC EVO, Droid
Incredible, Droid X, Samsung Droid Charge, Sidekick 4G

12. ANDROID SYSTEM
Android 2.3 – 2.3.7 Gingerbread
Introduced: December 6, 2010
Key features in this version of Android: UI
refinements, NFC support, native support for SIP VOIP,
faster/more intuitive text input, enhanced copy and paste
Notable devices of the day: Nexus S, HTC Sensation,
HTC EVO 3D, Motorola Droid Razr, Samsung Galaxy S II,
Sony Xperia Play

13. ANDROID SYSTEM
Android 3.0 – 3.2 Honeycomb
Introduced: February 22, 2011
Key features in this version of Android: Revamped
(holographic) UI designed specifically for tablets, action bar,
improved multi-tasking, updated standard Android apps, better
copy/paste, redesigned keyboard
Notable devices of the day: Motorola Xoom, Eee Pad
Transformer, Samsung Galaxy Tab

14. ANDROID SYSTEM
Android 4.0 Ice Cream Sandwich
Introduced: October 19, 2011
Key features in this version of Android: improved multi-tasking,
face unlock, resizeable widgets, Android beam,
enhanced email options, improved text and voice input, soft
buttons can replace hard keys
Notable devices of the day: Galaxy Nexus, HTC One X, LG
Optimus G, Samsung Galaxy Note 10.1, Motorola Droid Razr
M, Sony Xperia T

15. ANDROID SYSTEM
Android 4.1 – 4.3 Jelly Bean
Introduced: July 9, 2012
Key features in this version of Android: larger, rich, and
actionable notifications, Google Now, offline voice dictation,
streamlined UI, performance improvements “Project Butter”,
smart widget placement, multi-user profiles for tablets (4.2), lock
screen widgets (4.2), daydream (4.2), OpenGL ES 3.0 (4.3),
Bluetooth Smart Ready (4.3), restricted user profiles for tablets
(4.3)
Notable devices of the day: Samsung Galaxy S3, Samsung Galaxy
S4, Samsung Galaxy Note 3, Motorola Moto X, LG G2, Sony Xperia
Z, HTC One, Motorola Droid Razr Ultra

16. ANDROID SYSTEM
Android 4.4 KitKat
Introduced: TBD
Key features in this version of Android:
TBD
Notable devices of the day: