Worlds Most Popular Mobile Platform Computer Science
Android is a Linux-based operating system designed primarily for touchscreen mobile devices such as smartphones and tablet computers, developed by Google in conjunction with the Open Handset Alliance. Initially developed by Android Inc, whom Google financially backed and later purchased in 2005, Android was unveiled in 2007 along with the founding of the Open Handset Alliance, a consortium of 86 hardware, software, andtelecommunication companies devoted to advancing open standards for mobile devices.
Google releases the Android code as open source, under the Apache License. The Android Open Source Project (AOSP), led by Google, is tasked with the maintenance and further development of Android. Additionally, Android has a large community of developers writing applications ("apps") that extend the functionality of devices, written primarily in a customized version of Java. They are available for download through Google Play or third-party sites. In September 2012, there were more than 675,000 apps available for Android, and the estimated number of applications downloaded from Google Play was 25 billion.
The first Android-powered phone was sold in October 2008, and by the end of 2010 Android had become the world's leading smartphone platform. It had a worldwide smartphone market share of 68% at the second quarter of 2012, and as of Q3 2012, there were 500 million devices activated and 1.3 million activations per day.
The version history of the Android 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 a mobile operating system developed by Google and the Open Handset Alliance, and has seen a number of updates to its base operating system since its original release. These updates typically fix bugs and add new features. Since April 2009, Android versions have been developed under a codename and released in alphabetical order: Cupcake, Donut, Éclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich, and Jelly Bean. The most recent major update was Jelly Bean v4.1, which was announced in June 2012, and released into the Android Open Source Project a month later.
The Android beta was released on November 5, 2007, while the software development kit (SDK) was released on November 12, 2007.
Android 1.0, the first commercial version of the software, was released on September 23, 2008. The first Android device, the HTC Dream, incorporated the following Android 1.0 features:
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