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Android is a mobile operating system (OS).
based on the Linux kernel.
currently developed by Google .
User interface based on direct manipulation.
Android is designed primarily for touch screen.
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 T-Mobile)
Chris White(headed design and
interface development at Web TV)
Android's default 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, and a virtual keyboard.
The response to user input is designed to be immediate and provides a
fluid touch interface, often using the vibration capabilities of the device
to provide haptic feedback to the user.
Android devices boot to the home screen, the primary navigation and
information point on the device, which is similar to the desktop found on
PCs. Android home screens are typically made up of app icons and
widgets; app icons launch the associated app, whereas widgets display
live, auto-updating content such as the weather forecast, the user's
email inbox, or a news ticker directly on the home screen.
Applications ("apps"), that extend the functionality of devices,
are developed primarily in Athe Java programming language
using the Android software development kit (SDK).
Since Android devices are usually battery-powered, Android
is designed to manage memory (RAM) to keep power
consumption at a minimum, in contrast to desktop operating
systems which generally assume they are connected to
unlimited mains electricity. 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 and sit idly in the
background until needed again.
Voice based features
Multiple language support
Android supports connectivity technologies including GSM/EDGE, Wi-Fi,
Bluetooth, LTE, CDMA, EV-DO,UMTS, NFC, IDEN and WiMAX.
Streaming media support
• The version history of the Android mobile operating system
began with the release of the Android beta in November
2007. The first commercial version, Android 1.0, was
released in September 2008. Android is under ongoing
development by Google and the Open Handset Alliance
(OHA), and has seen a number of updates to its base
operating system since its initial release.
• Since April 2009, Android versions have been developed
under a confectionery-themed code name and released in
alphabetical order; the exceptions are versions 1.0 and 1.1
as they were not released under specific code names:
Version Code name
API level Distribution
4.1.x July 9, 2012 16 25.1%
Ubuntu Touch OS