My most familiar operating system is Android.

 

Android is a free and open source operating system based on Linux. Mainly used in mobile devices, such as smartphones and tablets, led and developed by Google and the Open Mobile Alliance. The Android operating system was originally developed by Andy Rubin, which mainly supports mobile phones. In August 2005, Google acquired the capital injection. In November 2007, Google formed an open mobile alliance with 84 hardware manufacturers, software deve