1. ANDROID
OPERATING
SYSTEM
MADE BY:- Prathamesh Bhosale

2. INTRODUCTION
• Android is a Linux-based operating system designed
primarily for touchscreen mobile devices such
as smartphones and tablet computers.
• It’s a open source platform developed under the
open handset alliance to unable faster
development of mobile applications and provision
of services to the users.

3. HISTORY
Android, Inc. was founded in Palo Alto, California in
October 2003 by Andy Rubin (co-founder
of Danger),Rich Miner (co-founder of Wildfire
Communications, Inc.), Nick Sears (once VP at TMobile), and Chris White (headed design and interface
development at WebTV).
The early intentions of the company were to develop an
advanced operating system for digital cameras, when it
was realised that the market for the devices was not
large enough, and diverted their efforts to producing a
smartphone operating system to rival those

4. 
acquired Android Inc. on August 17, 2005,
making it a wholly owned subsidiary of Google. Key
employees of Android Inc., including Rubin, Miner and
White, stayed at the company after the acquisition.
On November 5, 2007, the Open Handset Alliance,
technology companies including Google, device
manufacturers such as HTC, Sony and Samsung,
wireless carriers such as Sprint Nextel and T-Mobile,
and chipset makers such as Qualcomm and Texas
Instruments, unveiled itself, with a goal to
develop open standards for mobile devices. That day,
Android was unveiled as its first product, a mobile

5. The first commercially available phone to run
Android was the HTC Dream, released on October
22, 2008.
THE HTC DREAM

6. VERSIONS OF ANDROID
• Since 2008, Android has seen numerous updates which
have incrementally improved the operating system,
adding new features and fixing bugs in previous releases.
Each major release is named in alphabetical order after a
dessert.

8. • Google launched its Nexus series of
devices-a line of smartphones and
tablets running the Stock Android
operating system, and built by a
manufacturer partner. HTC collaborated
with Google to release the first Nexus
smartphone,the Nexus One. The series
has since been updated with newer
devices, such as the Nexus 4 phone
and Nexus 10 tablet.

9. By 2013 devices have this versions Installed

11. LATEST VERSIONS
• The latest version of Android Jelly Bean 4.3 was released
July 24, with updates to features such as Bluetooth Low
Energy support, Bluetooth Audio/Video Remote Control
Profile (AVRCP) 1.3 support, 4K resolution support, bug
fixes and many security/performance enhancements.
• Google's next big OS upgrade will be the Android 5.0 Key
Lime Pie.
• Android 5.0-Key Lime Pie, may be released alongside the
Nexus 5 later this fall.

12. INTERFACE
Android's user interface is
based on direct
manipulation, using touch
inputs that loosely correspond
to real-world actions, like
swiping, tapping, pinching and
reverse pinching to
manipulate on-screen objects.
Android home screens are
typically made up of app icons
and widgets.

13. APPLICATIONS
Android has a growing selection of third party
applications, which can be acquired by users either
through an app store such as Google Play or by
downloading and installing the application's APK file
from a third-party site.
Purchases of unwanted applications can be refunded
within 15 minutes of the time of download.
As of September 2012, there were more than
6,75,000 apps available for Android, and the
estimated number of applications downloaded from

14. USERS CAN ALSO PURCHASE CHROMEBOOKS, GOOGLE
NEXUS–BRANDED MOBILE DEVICES, OTHER GOOGLEBRANDED HARDWARE, AND ACCESSORIES THROUGH
GOOGLE PLAY

15. DEVELOPMENT OF APPS
• Applications are developed in
the Java language using the Android software
development kit (SDK). The SDK includes a
comprehensive set of development tools,
including a debugger, software libraries, a
handset emulator based on QEMU,
documentation, sample code, and tutorials.
The officially supported integrated
development environment (IDE)
is Eclipse using the Android Development
Tools (ADT) plug-in.

16. OPEN-SOURCE COMMUNITY
• Android has an active community of developers and
enthusiasts who use the Android source code to develop
and distribute their own modified versions of the
operating system. These community-developed releases
often bring new features and updates to devices faster
than through the official manufacturer/carrier channels,
albeit without as extensive testing or quality assurance;
provide continued support for older devices that no
longer receive official updates; or bring Android to
devices that were officially released running other

17. SECURITY AND PRIVACY
• Android applications run in a sandbox, an
isolated area of the system that does not
have access to the rest of the system's
resources, unless access permissions are
explicitly granted by the user when the
application is installed. Before installing an
application, the Play Store displays all
required permissions, for example, a game
may need to enable vibration or save data to
an SD card, but should not need to read SMS
messages or access the phonebook.

18. • Google currently uses their Google Bouncer malware
scanner to watch over and scan the Google Play store
apps. It is intended to flag up suspicious apps and warn
users of any potential issues with an application before
they download it.

19. BEYOND SMARTPHONES AND TABLETS
• The open and customizable nature of Android allows it
to be used on other electronics, including laptops
and netbooks, smartbooks smart TVs(Google TV) and
cameras (Nikon Coolpix S800c and Galaxy Camera). In
addition, the Android operating system has seen
applications on smart glasses (Google Glass),
wristwatches, portable media players. Ouya, a video
game console running Android, became one of the most
successful and was later followed by other Androidbased video games consoles such as Project
Shield from Nvidia.

20. GOOGLE GLASS
NVIDIA SHIELD
SONY SMARTWATCH