Android was founded in 2003 by Andy Rubin, Rich Miner and Nick Sears to develop software for mobile phones. In 2005, Google acquired Android Inc. and continued developing the Android operating system. Android uses a touchscreen interface based on direct manipulation gestures and incorporates sensors like accelerometers and gyroscopes. While developed privately, Google releases the source code publicly for select devices to build upon. Android consists of a Linux kernel with Java-compatible libraries and APIs for building applications. It is designed to minimize power consumption by suspending unused apps in memory. Beyond phones and tablets, Android powers devices like smart TVs, watches and glasses.

1. History & development of
Android operating system
.

2. History
• Android, Inc. was founded
in Palo Alto, California in
October 2003 by Andy
Rubin , Rich Miner & Nick
Sears .Android Inc.
operated secretly,
revealing only that it was
working on software for
mobile phones.
• Google acquired Android
Inc. on August 17, 2005,
making it a wholly owned
subsidiary of Google.
First android phone version 1.0

3. Interface
• Android's user interface is
based on direct manipulation
using touch inputs that
correspond to real-world
actions, like swiping, tapping,
pinching and reverse pinching
to manipulate on-screen
objects . Internal hardware
such as accelerometers ,
gyroscopes and proximity
sensors are used by some
applications to respond to
additional user actions.
Android full touch command interface

4. Development
• Android is developed in
private by Google until
the latest changes and
updates are ready to be
released, at which point
the source code is made
available publicly. This
source code will only
run without
modification on select
devices. usually the
Nexus series of devices.
Latest android Jellybean version 4.2

5. Platform
Android consists of a
kernel based on Linux
kernel version 2.6 and,
from Android 4.0 Ice
Cream Sandwich
onwards, version 3.x,
with middleware,
libraries and APIs
written in C, and
application software
running on an
application framework
which includes Java-compatible
libraries.
Android full framework diagram platform

6. Memory management
• Since Android devices are usually
battery-powered, Android is
designed to manage memory
(RAM) to keep power
consumption at a minimum.
When an Android app is no
longer in use, the system will
automatically suspend it in
memory - while the app is still
technically "open," suspended
apps consume no resources .Apps
don't need to be closed and
reopened from scratch each time,
but also ensuring background
apps don't waste power
needlessly.

7. Reception
2.24%
25.23%
50.76%
7.82%
4.22%
9.53%
Total market share of android version

8. Beyond smart phone &
tablets
• The open and customizable
nature of Android allows it
to be used on other
electronics, including
laptops and net books,
smart books smart TVs
(Google TV) and cameras
In addition, the Android
operating system has seen
applications on smart
glasses , wrist watch& head
phones .
Sony smart wrist watch
running on android 4.0.4

9. Latest android gadgets
Google TV Google glasses
Android powered smart TV Android powered smart glasses

10. In this modern age , our devices are
becoming thicker . Micro processors are
powering those devices but android
operating system has the important
role to make these devices ‘alive’.