3. What is android
Android is Linux based operating system
designed primarily for mobile devices such as
smartphones and tablets.
Android was first developed as a ADVANCE
OPERATING SYSTEM for digital cameras.
There are more than 4,00,000 apps in android
And, android is an open source.
4. What is Operating System
An operating system, or "OS," is software that
communicates with the hardware and allows
other programs to run..
Common desktop operating systems
include Windows, OS X, and Linux
Common mobile OS include Android, iOS, and
5. android Operating System
Android OS consists of a shell and a kernel.
Creator’s of android takes out the kernel from Linux
OS 2.6 and rewrite the shell part using java, that’s
forms android OS.
(modified LINUX kernel)
(Written in Java)
7. Origin of android
Android was founded in Palo Alto, California in
October 2003 by
Andy Rubin, Rich Miner,
Nick Sears and Chris White who work at
“ ” to develop.
8. …Origin of android
Android was purchased by the
in AUGUST, 2005 for 50 million $.
HTC Dream was the first android device
launched in September 2008
Now, android covers 90% of the mobile OS
9. Open Handset Alliance (OHA)
It’s consortium of several companies.
OHA is a business alliance of firm to develop open
standard for mobile device.
OHA includes 84 firms to develop open standard for
mobile devices, i.e.
HTC, Sony, Dell, Intel, Motorola, QUALCOMM, Google
, Samsung Electronics, LG Electronics,T-Mobile,
Reason for Nokia not to developAndroid Mobiles is
Nokia is not part of OHA
Android supports wireless communication using:-
3G Networks, 4G Networks, 802.11Wi-Fi Networks,
Developing an android application is not tough
,using SDK and java emulator we can easily develop
applications that we want.
Open source – Free development platform
Built in services likeGPS,SQL Database, browser
Portability across current and future hardware
11. android Versions
Android Astro 1.0
• Released on September 23, 2008.
Android Cupcake 1.5
• Released on April 30, 2009.
Android Donut 1.6
• Released on September 15, 2009.
Android Éclair 2.0/2.1
• Released on October 26, 2009.
Android Froyo 2.2
• Released on May 20, 2010.
Android Honeycomb 3.0
• Released on February 22, 2011.
Android IceCream Sandwich 4.0
• Released on November 14, 2011
Android JellyBean 4.1
• Released on June 27,2012
Android Kitkat 4.4
• Released on October 31,2013
Android Gingerbread 2.3
• Released on December 6, 2010
12. android Versions
Android Lollipop 5.0
• Released on November 12, 2014
Android Marshmallow 6.0
• Released on May 28, 2015
Android Nougat 7.0
• Released on August 22, 2016
Android Oreo 8.0
• Released on August 21, 2017
• Latest version till date.
16. Linux Kernel
Android Architecture is based on Linux 2.6
kernel. It helps to manage security, memory
management, process management, network
stack and other important issues.
17. Android Runtime
Android includes a set of core libraries that provides most
of the functionality available in the core libraries of the Java
• Dex files
• Compact and efficient than class files
• Limited memory and battery power
• Java 5 Std edition
• Collections, I/O etc…
• Providing most of the functionality available in the core
libraries of the Java language.
Android includes a set of:
Interface through Java
Surface manager – Handling UI Windows with 2D and
Media codes, SQLite, Browser engine
The Android Studio 3.1 supports new set of library :
19. Application Framework
The application architecture is designed to simplify the reuse
Activity manager – manages application life cycle
Android provides a set of coreapplications:
All applications are written using theJava language.
APIs: DataStructures,Utilities, File Access, NetworkAccess,
23. Why prefer android ?
Android price fits your pocket
Android devices are cheaper than iPhones which is one of main
reason why Android phone sale is growing rapidly. IPhone is an
expensive device which everybody can’t afford to buy.
Free apps and games
Android offers a lot of free games and applications on google play,
whereas IPhone have mostly paid Apps on App Store. which is also
the main reason why people skip IOS and attract towards android.
Android offers many cool launcher apps for customizing home
screen’s style. While Apple do not allow users to customize their
home screen and all the users have same home screen.
24. Custom ROMs
Android users can install custom Rom on their smart phone, which
allows them to replace original software comes with their smart
phone. Some of the android users want to use some tools and apps
which do not work on their original OS, that’s why they Root their
phone and install custom ROMS.
Google integration is very useful service provided by google to it’s
users. unarguably google dominates the web with it’s awesome
services like Google drive, Google Music, Google Map, Google Docs,
Google mail, Google plus, Google hangout.. and the list goes on,
but IOS do not provide these apps integration.
Android allows you to put a memory card to increase your phone
memory. What does Apple do? Well, they've never offered
expandable memory for the iPhone. Instead, they would rather you
pay another $100 to upgrade one of their devices from a 16 GB
memory to a 32 GB or 64 GB
25. Multi tasking using Multi-window navigation feature
iOs does not allow
Making source code available to everyone inevitably
invites the attention of hackers.
Android operating system uses more amount of
battery as compared to normal mobile phones.
It has been seen that it has security related issues.
As we call Android is world of applications we
continuously need to connected with the internet
which is not possible for all the users.
Android is a truly open, free development
platform based on Linux and open source.
Handset makers can use and customize the
platform without paying a royalty.
Android is now stepping up in next level of
Android is open to all: industry, developers and
Google Android is stepping into the next level
of Mobile Internet & that is the reason that
android covers 90% of mobile OS market