Your Android

Android is a mobile operating system (OS)
based on the Linux kernel and currently
developed by Google. With a user interface
based on direct manipulation, Android is
designed primarily for touchscreen mobile
devices such as smartphones and tablet
computers, with specialized user interfaces
for televisions (Android TV), cars (Android
Auto), and wrist watches (Android Wear). The
OS uses 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.
Despite being primarily designed for
touchscreen input, it also has been used in
game consoles, digital cameras, and other
electronics.
Alpha (1.0)
Beta (1.1)
Cupcake (1.5)
Donut (1.6)
Eclair (2.0–2.1)
Froyo (2.2–2.2.3)
Gingerbread (2.3–2.3.7)
Honeycomb (3.0–3.2.6)
Ice Cream Sandwich (4.0–4.0.4)
Jelly Bean (4.1–4.3.1)
KitKat (4.4–4.4.4)
As of 2011, Android has the largest installed
base of any mobile OS and as of 2013, its
devices also sell more than Windows, iOS,
and Mac OS devices combined
As of July 2013 the Google Play store has
had over 1 million Android apps published,
and over 50 billion apps downloaded.
A developer survey conducted in April–May
2013 found that 71% of mobile developers
develop for Android.
At Google I/O 2014, the company revealed
that there were over 1 billion active monthly
Android users (that have been active for 30
days), up from 538 million in June 2013.
Android's source code is released by Google
under open source licenses, although most
Android devices ultimately ship with a
combination of open source and proprietary
software