This is only about android for beginners and it is very useful,

1. THE WORLD’S MOST USED OS

2. Contents:
1)Meaning of android
2)Introduction
3)Background(History)
4)Android Versions
5) Advantages and Disadvantages
6)Comparision

3. It is automaton that
resembles a humanoid or
a mechanical man. Now,
all of us are familiar with
Andy, the little green guy
who appears when ever
Android is around.
Ascender Corporation
designed this logo. Most
of us who are familiar
with Android know that
it is a name we call
robots. Yes, Android is a
robot. Android is a robot
with a human appearance

4.  Android's mobile
operating system is based
on the Linux kernel and is
the world's best-selling
Smartphone.
 There are currently over
200,000 apps available for
Android that are made
accessible through the
Android Market, which is
the online app store run
by Google.
 The apps are primarily
written in Java.

5.  Android Inc. was founded in
Palo Alto, California in
October, 2003 by Andy
Rubin, Rich Miner, Nick
Sears, and Chris White.
 Their goal was to develop a
"smarter mobile device that
was more aware of its
owner's location and
preferences.”
 They operated secretively,
admitting only that they
were working on software
for mobile phones.

6.  Google acquired Android
Inc. in August, 2005,
making Android Inc. a
wholly owned part of
Google Inc.
 Nick Sears was the only
original founder that did
not stay with Android Inc.
after the acquisition.
 At this point in time,
many assumed that
Google was planning to
enter the mobile phone
market with this move.

7.  Once at Google, Rubin led a team to develop a
mobile device platform powered by the Linux
kernel.
 Google marketed the platform to handset
makers and carriers with the intent of
providing a flexible, upgradable system.
 This caused speculation about Google's
intention to enter the mobile communications
market to build.

8.  On October 21st, 2008, Android 1.0 became
available to the public.
 "Today's announcement is more ambitious than any
single 'Google Phone' that the press has been
speculating about over the past few weeks. Our
vision is that the powerful platform we're unveiling
will power thousands of different phone models.“

9. S.No Version Name Version Number Release date
1 Cupcake 1.5 April-2009
2 Donut 1.6 15-September-2009
3 Eclair 2.0-2.1 26-October-2009
4 Froyo 2.2-2.2.3 20-May-2010
5 Gingerbread 2.3-2.3.7 6-December-2010
6 Honeycomb 3.0-3.2.6 22-febraury-2011
7 Icecream 4.0-4.0.4 18-October-2011
8 Jellybean 4.1-4.3,1 9-July-2012
9 Kitkat 4.4-4.4.4 31-October-2013
10 Lollipop 5.0-5.1.1 12-November-2014
11 Marshmallow 6.0-6.0.1 5-November-2015
12 Nougat 7.0 22-August-2016

12. Advantages:
1) Multitasking
2) Ease of Notification
3) Easy access of thousands of apps via
Google app
4) Phone options are diverse
5) Can install a modified ROM
6) Widget
7) Google Maniac
8)Multitouch

13. Disadvantages:
1)Continuous Internet connection
2)Advertising
3)Little Memory for Storage
4)Force Close on Large App/Games
5)Data Connection
6)Battery Problem
7)Box of Malware Google play store
8)About Security

14.  Comparing the android
with other operating
systems are not so much
famous as android
because android is not a
software it is a man made
“ANDRO HUMANOID
ROBO “.It is a highly
used software in all over
the world.