What is Android?
Android is an operating system which is developed by Google with Linux Kernel and designed for smart touchscreen devices as mobile phones and tablets.
Android was first developed by Android Inc and bought by Google in 2005.Android was announced publically in 2007 along with open handset alliance which is a hardware, software and telecommunication company which is committed to advancing open standards for mobile devices.
Begin First commercial Android device in September 2008, the operating system has passed through lot major releases.
Android 1.6. Donut.
Android 2.1. Eclair.
Android 2.2. Froyo.
Android 2.3. Gingerbread.
Android 3.0. Honeycomb.
Android 4.0. Ice Cream Sandwich.
Android 4.1. Jelly Bean.
Android 4.4. KitKat
Android apps can be download from play store, there are million's of apps which can be download from play store, play store is a major source for android apps.