Android is an open-source operating system developed by Google and the Open Handset Alliance. It was founded in 2003 by Andy Rubin, Rich Miner, and Nick Sears. Google's Android allows developers to write once and have their applications run on multiple devices like smartphones and tablets from various manufacturers. The Android software stack includes an operating system, middleware, and key apps. It uses a Linux kernel and Java applications running on a custom virtual machine. This architecture provides a secure and robust platform for developers to write applications.

2. What is ANDROID
• Google's Android is an open-source platform that's
currently available on a wide variety of smart phones.
• Android is a software stack for
mobile devices that includes an
operating system, middleware and
key applications.

3. THE ANDROID’S BEGINNIG
Android, Inc. was founded in Palo Alto,
California,USA in October 2003
FOUNDERS:
• Andy Rubin
(co-founder of Danger)
• Rich Miner
(co-founder of Wildfire Communications, Inc.),
• Nick Sears
(once VP at T-Mobile)

4. Andy Rubin
(co-founder of Danger),

5. Rich Miner
(co-founder of Wildfire Communications Inc.)

6. Nick Sears
(once VP at T-Mobile)

7. Open Handset Alliance
• Google’s android OS is an Operating System
that can be used in any android capable
device (Android smart phones)
• It is used in wide verity of android smart
phones & android tablets that are
manufactured by different companies

8. ANDROID SMART PHONES

9. ANDROID TABLETS
GOOGLE
NEXUS 7
BY ASUS
TAB 2
BY
SAMSUNG

10. Open Handset Alliance
• Main Product :Android Platform
• Enthusiastic Support from Industry
– Equipment makers
– Network Operators
• HTC was First to deliver ANDROID

11. htc dream
(THE FIRST ANDROID PHONE)

12. ANDROID OS
(Operating System)
• The first Android OS is Cupcake 1.5
• The operating system has various
improvement since the beginning
• The newest OS is the Android 4.1.2
it is called JELLY BEAN

13. THE ANDROID OS EVOLUTION

14. ANDROID ARCHITECTURE
The software stack is split into Four Layers::
• The application layer
• The application framework
• The libraries and runtime
• The kernel

16. LINUX KERNEL
•The architecture is based on the Linux2.6 kernel.
Android use Linux kernel as its hardware abstraction
layer between the hardware and rest of the software.
•It also provides memory management, process
management, a security model, and networking, a lot
of core operating system infrastructures that are
robust and have been proven over time

17. NATIVE LIBRARIES
•The next level up is the native libraries.
Everything that you see here in green is written
in C and C++.

18. Android Run Time
•The Android Runtime was designed specifically for
Android to meet the needs of running in an embedded
environment where you have limited battery, limited
memory, limited CPU.
•The DVM runs something called dex files, D-E-X and
these are byte codes that are the results of converting at
build time. Class and JAR Files.

19. Android Run Time
•This is in blue, meaning that it's written in
the Java programming language.
•The core library contains all of the collection
classes, utilities, IO, all the utilities and tools
that you’ve come to expected to use.

20. Application Framework
•This is all written in a Java programming language and
the application framework is the toolkit that all
applications use.
•These applications include the ones that come with a
phone like the home applications, or the phone
application.
•It includes applications written by Google, and it
includes apps that will be written by you.
•So, all apps use the same framework and the same
APIs.

21. APPLICATION LAYER
•And the final layer on top is Applications.
•This is where all the applications get written.
•It includes the home application, the contacts
application, the browser, and your apps.
•And everything at this layer is, again, using the same
app framework provided by the layers below.

22. ADVANTAGES
•The ability for anyone to customize the Google Android platform
•The consumer will benefit from having a wide range of mobile
applications to choose from since the monopoly will be broken by
Google Android
•Users will be able to customize a mobile phones using Google
Android platform like never before
•Features like weather details, opening screen, live RSS feeds and
even the icons on the opening screen will be able to be customized
•As a result of many mobile phones carrying Google Android,
companies will come up with such innovative products like the
location
•In addition the entertainment functionalities will be taken a notch
higher by Google Android being able to offer online real time
multiplayer games

23. LIMITATIONS OF ANDROID
Development requirements in
Java
Android SDK
Eclipse IDE (optional)
Bluetooth limitations
Firefox mobile isn't coming to android
because of android limitations

24. CONCLUSION
We hope that the next versions of Android have
overcome the actual limitations and that the
future possibilities became a reality and may this
software is also developed to use in PC’s also.