Android is an open-source, Linux-based operating system designed primarily for touchscreen mobile devices such as smartphones and tablets. It was developed by Android Inc., which was bought by Google in 2005. Major versions include Cupcake, Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich, Jelly Bean, KitKat, and Lollipop. The operating system is known for its open nature, access to Google services, and support for third-party apps. However, it requires an internet connection to function fully and sometimes displays advertisements.

2.  Android is an operating system based on Linux
 It is specially designed for touch screen
Smartphone's and Tablets Computers.
It is an open source platform.
Android is a product of Google and have a large
number of developers.

3. History & development of android
 Android Inc. was founded by Andy Rubin in
California USA.
Google Shows his interest in Android Inc. and
acquired Android Inc. on August 17, 2005.
The history of the Android version began with the
release of Android Beta in November 2007. After
That release Android Operating system does not
look back. Android has a number of release of its
version.

4. VERSIONS OF ANDROID
ANDROID 1.0 (ANGEL CAKE)
ANDROID 1.1 (BATTENBERG)
ANDROID 1.5 [CUPCAKE]
ANDROID 1.6 [DONUT]
ANDROID 2.0 T0 2.1 [ECLAIR]
ANDROID 2.2 TO 2.2.3 [FROYO]

5. ANDROID 2.3 TO 2.3.7 [GINGERBREAD]
ANDROID 3.0 TO 3.2.6 [HONEYCOMB]
ANDROID 4.0 TO 4.0.4 [ICE CREAM
SANDWICH OR ICS]
ANDROID 4.1 AND 4.2 [JELLY BEAN]
ANDROID 4.4 KITKAT
 ANDROID 5.0 LOLLIPOP

6. ANDROID 1.0 (ANGELCAKE)
This was the first android commercial version
released on November23, 2008. The first
Commercially device based on Android
operating system was HTC Dream.

7. MAIN FEATURES OF ANDROID 1.0
Application downloaded and update from android
application market.
 Support POP3, IMAP4 and SMTP web email servers..
 Google Maps with Latitude and street view.
 Web browser supports HTML and XHTML web pages.
 Voice dialer which allows dialing and placing phone calls.
 Support WI-Fi and Bluetooth.

8. ANDROID 1.1 (BATTENBERG)
 In 9 February 2009, version 1.1 was released.
Although it took almost a year to materialize,
it wasn't a major update.
the software was also optimized to run
smoother.
It was after this update that the development
of this open-source software picked up speed

9. Main FEATURES OF ANDROID 1.1
Enhance the use of Google Maps.
Save attachments of messages.
Long screen timeout when using
speakerphone.
Media player and YouTube video playing.
Camera options like change resolution and
white balance.

10. ANDROID 1.5 [CUPCAKE]
This version of android released on 27 April
2009. This was the first android update which
officially uses a code name “Cupcake”.
Cupcake was also the first refinement process
for Android, changing some of the user
interface &icons to be more mobile friendly

11. MAIN FEATURES OF ANDROID 1.5
Copy and paste features for web browsers
Auto rotation of screen.
Ability to upload photo and video to Picasa and
YouTube
Video recording and playback in MP4 and 3GP
formats
 Supports for widgets.

12. ANDROID 1.6 [DONUT]
On 15 September 2009, Android released new
version named Android 1.6 Donut.
It added support for larger screen size, & is the
first version to offer Google turn-by-turn
navigation feature.

13. MAIN FEATURES OF ANDROID 1.6
•Enhance the voice and text search
•Enhance Android Application market for easier
application search.
•Camera, camcorder and gallery integration.
•Faster camera access.
•Delete multiple photo in one click.
• Support graphic screen resolution.

14. ANDROID 2.0 T0 2.1 [ECLAIR]
On October 26, 2009 Android released the new
update named Android 2.0 Éclair. There were
two updates released under the code name Éclair.
Android 2.0.1 and Android 2.1 released on
December 3rd 2009 and January 12th 2010
respectively.

15. MAIN FEATURES OF ANDROID 2.0 T0 2.1
Add new camera features like flash support
and digital zoom.
Improver uses of the virtual keyboard.
Screen resolution with batter contrast ratio.
Google Maps 3.1.2 with better experience.
Live wallpaper and animation.
Add Microsoft exchange email support.

16. This update was released on 20 may 2010
named Froyo. There were three more updates
reaeased under the code Name Froyo.
They are-
•Android 2.2.1 Froyo released on 18 January
2011.
•Android 2.2.2 Froyo released on 22 January
2011.
•Android 2.2.3 Froyo released on 21 November
2011.

17. MAIN FEATURES OF
WI-Fi hotspot and USB tethering .
Support numeric and alphanumeric password.
High screen Support..
Adobe Flash Support.
Multiple keyboard language
Voice calls and contact sharing over Bluetooth.

18. ANDROID 2.3 TO 2.3.7
[GINGERBREAD]
This update was released on 06 December 2010
named Gingerbread. There were many updates
released .They are-
Android2.3.1 Gingerbread released on
December 2010.
Android 2.3.2 Gingerbread released on
January 2011.
Android2.3.3 Gingerbread releasedon9
February 2011.

19. MAIN FEATURES OF ANDROID 2.3 TO 2.3.7
Update user interface design and speed
Faster and more accurate text input with virtual
keyboard and voice input
Support extra large screen and resolution
Support multiple camera of the device.
Multi touch keyboard.

20. On 22 February 2011 Android release a new
updates named Android 3.0 Honeycomb. This
was the first version of Android which designed
specially for tablets.
There were two major updates under the code
name of Honeycomb - Android 3.1 Honeycomb
and Android 3.2 Honeycomb. They were
released on May 10th And July 15th 2011.

21. MAIN FEATURES OF
Support external keyboard and pointing
devices.
Support joystick and Gamepads.
 support for 3g and 4g tablets.
Google books
Simplified multitasking for tablet users.
New user interface

22. ANDROID 4.0 TO 4.0.4 [ICE CREAM
SANDWICH]
The Android 4.0 was released on 19 October
2011. This version of Android is compatible for
all types of Android devices like tablets,
Smartphone. It has better user interface and
easy multitasking facility.

23. MAIN FEATURES OF ANDROID 4.0 TO 4.0.4
Easy Application Multitasking.
Customizable launcher.
Pinch to zoom function.
Support 1080 video resolution.
Face lock unlocks features.
Smoother screen rotation.

24. ANDROID 4.1 AND 4.2 [JELLY BEAN]
On July 9th 2012 Android release a new
updates named Android 4.1 Jelly Bean. Nexus
7 was the first device run on the jelly Bean
There were many updates
They were from Android 4.1 to Android 4.2.2
Jelly Bean, released between July 2012 to
February 2013

25. MAIN FEATURES OF ANDROID 4.1 AND 4.2
Smoother user interface.
Google Now, search application.
Bi-directional language.
Other language support.
Keyboard with gesture typing.

26. ANDROID 4.4 KITKAT
Google has JUST announced on 03-SEP-2013
that Android 4.4 will be named Kitkat.
That means this version should be released
very soon for the Nexus devices.

27. MAIN FEATURES OF ANDROID 4.4 KITKAT
Android 4.4 takes system performance to an all-
time high by optimizing memory and improving
your touch screen so that it responds faster and
more accurately than ever before.
you can listen to music while browsing the web,
or race down the highway with the latest hit
game, all without a hitch.
Multiple user accounts for tablets.

28. ANDROID 5.0 LOLLIPOP
Android Lollipop is a version of the Android mobile
operating system developed by Google, spanning
versions between 5.0 and 5.1.1. Unveiled on June
25, 2014, during the Google I/O conference, it
became available through official over-the-
air updates on November 12, 2014, for select
devices that run distributions of Android serviced
by Google (such as Nexus and Google Play
edition devices). Its source code was made available
on November 3, 2014.

29. MAIN FEATURES OF ANDROID 5.0 LOLLIPOP
Notifications can be dismissed to the status bar
Memory leak seems to be gone
Lock screen changes
Google Play Store animations
 Quick Settings sub-menus and toggles
LED works in all sound modes
New sound widget icons
 New clear all notifications animation
New Quick Settings and clock animations

30. Android is open, because it is Linux based open source so it
can be developed by anyone.
 Easy access to the Android App Market
 USB full facilities. You can replace the battery, mass
storage, Disk Drive, and USB tethering.
 Easy in terms of notification: the operating system is able to
inform you of a new SMS, Email
 Supports all Google services: Android operating system
supports all of Google services ranging from Gmail to
Google reader.

31. DISADVANTAGES OF ANDROID
• Connected to the Internet: Android can be said is in
need of an active internet connection. At least there
should be a GPRS internet connection in your area, so
that the device is ready to go online to suit our needs
• Sometimes there are ads: because it is easy and free,
sometimes often a lot of advertising.
• Wasteful Batteries, This is because the OS is a lot of
"process" in the background causing the battery quickly
drains.

32. THANK YOU…