android operating system
DESCRIPTION
About Android OS and FeaturesTRANSCRIPT
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Android Operating System
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History
Founded by open handset alliance (OHA) by a
group in 2003 by ANDY ROBIN(danger) RICH
MINER (co founder of wildfire communication)
NICK SEARS (vpt-moblie) CHRIS WHITE(design
and interface developed at web TV).
ANDROID logo designed by California based
graphic designer IRINA BLOCK.
Google lacked financially and latter brought in
android in 2005.
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History(Cont)
GOOGLE reveled in 2007 with first mobile
android powered phone which was HTC
DREAM was sold in October 22nd 2008.
ANDROID is a open source and Google
releases the code under Apache license.
October 2012 approximately 700000 apps
were available for downloads
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Versions
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Architecture
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Features
Handset Layouts
The platform is adaptable to larger, VGA, 2D graphics library, 3D graphics library based on OpenGL ES 2.0 specifications, and traditional smartphone layouts.
Storage
SQLite , a lightweight relational database, is used for data storage purposes.
Connectivity
Android supports connectivity technologies including GSM/EDGE, IDEN, CDMA, EV-DO, UMTS, Bluetooth, Wi-Fi, LTE, NFC and WiMAX.
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Features(Cont)
Messaging
SMS and MMS are available forms of messaging,
including threaded text messaging and
Android Cloud To Device Messaging (C2DM) and
now enhanced version of C2DM, Android
Google Cloud Messaging (GCM) is also a part of
Android Push Messaging service.
Multiple language support
Android supports multiple languages . Web browser
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Features(Cont)
Java support
Android applications are written in Java,
Java classes are compiled into Dalvik executables
and run on Dalvik, a specialized virtual machine
designed specifically for Android
Media support
Android Supports many audio and video formats
some of them WebM, H.263, H.264
etc.
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Features(Cont)
Streaming media support
RTP/RTSP streaming (3GPP PSS, ISMA), HTML
progressive download (HTML5 <video> tag).
Adobe Flash Streaming (RTMP) and HTTP Dynamic
Streaming are supported by the Flash plugin.
Multi-touch
Android has native support for multi-touch which
was initially made available in handsets such
as the HTC Hero.
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Features(Cont)
Bluetooth
Supports A2DP, AVRCP, sending files (OPP),
accessing the phone book (PBAP), voice dialing and
sending contacts between phones
Multitasking
Multitasking of applications, with unique handling of
memory allocation, is available. Voice based features
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Features(Cont)
Tethering
Android supports tethering, which allows a phone
to be used as a wireless/wired Wi-Fi hotspot.
External storage
Most Android devices include microSD slot and can
read microSD cards formatted with FAT32, Ext3 or
Ext4 file system
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Applications
Applications are usually developed in the Java
language using the Android Software Development
Kit,
Google App Inventor, a visual environment for
novice programmers
Applications can be acquired by end-users either
through a store such as Google Play or the
Amazon Appstore, or by downloading and installing
the application's APK file from a third-party site.
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Security
Android applications run in a sandbox
Isolated area of the operating system that does
not have access to the rest of the system's
resources, unless access permissions are
granted by the user when the application is
installed
The sandboxing and permissions system
weakens the impact of vulnerabilities and bugs
in applications
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Privacy
Android smartphones have the ability to report
the location of Wi-Fi access points
Databases containing the physical locations of
hundreds of millions of such access points
These databases form electronic maps to locate
smartphones, allowing them to run apps like
Foursquare, Latitude, Places, and to deliver
location-based ads.
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License
The source code for Android is available under
free and open source software licenses.
The Open Handset Alliance develops the
changes to the Linux kernel, in public, with
source code publicly available at all times
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