Android is Mobile Operating System (M-OS) that was initially developed by Android Inc., a company that was purchased in 2005 by Google. This mobile operating system is based on the modified version of Linux Kernel.
In the 2nd Quarter of 2010, the smartphones running under Android operating system were ranked first among the smartphone OS. One of the advantages of Android OS is that it has the large community of developers writing an application program that broaden the functionality of the devices running Android OS. It is estimated that there are already more or less 70,000 available applications for Android, which makes it the 2nd most popular mobile development environment. According to Gartner, in the 2nd quarter of 2010, the market share of smartphone per unit of sales running Android OS is 17% (3rd in rank). In May 2010, the first quarter US sales surpassed that of the rival iPhone platform. According to a report by the NPD group, Android achieved 28% smartphone sales in the US market, up 8% from the December 2009 quarter. As of August 4, 2010, Google is now activating 200,000 new phones to the Android platform per day.
The Android mobile operating system versions are the following: Android 1.5 (Cupcake), 1.6 (Donut), 2.1 (Eclair), and 2.2 (Froyo).
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One latest Android Tablet PC that stands with a great advantage in terms of software compatibility is the WITSTECH A81E. This advanced tablet PC (best iPad alternative) runs with the latest Android 2.2 mobile operating system. This versatile tablet PC also the first to run the latest Adobe Flash 10.1 that enables you to play every media rich content web like the popular YouTube. Adobe Flash is a multimedia platform used to add animation, video, and interactivity to Web pages.