Android Evolution

Android is the operating system that powers over 1 billion smartphones and tablets. Since these devices make our lives so sweet, each Android version is named after a dessert: Cupcake, Donut, Eclair, Froyo, Gingerbread, Honeycomb, Ice Cream Sandwich, and Jelly Bean, powered by Google. As everybody finds it difficult to stay away from chocolate Andriod decided to name the next version of Android after one of the favorite chocolate treats, Kit Kat!

The Android Story Whether it's getting directions, sharing photos with friends, or even slicing virtual fruit, each Android release makes something new possible.
Android 1.5, Cupcake Right from the start, Android is an open OS that can run almost any app or widget so you can do what you want to do.
 Android 1.6, Donut The world's information is at your fingertips - search the web, get driving directions...or watch cat videos.
Android 2.0, Eclair Make your home screen just how you want it. Arrange apps and widgets across multiple screens and in folders. Stunning live wallpapers respond to your touch.
Android 2.2, Froyo Voice Typing lets you input text, and Voice Actions let you control your phone, just by speaking.
Android 2.3, Gingerbread New sensors make Android great for gaming - so you can touch, tap, tilt, and play away.
Android 3.0, Honeycomb Optimized for tablets, this release opens up new horizons wherever you are.
Android 4.0, Ice Cream Sandwich Android comes of age with a new, refined design. Simple, beautiful and beyond smart.
Android 4.1, Jelly Bean Android is fast and smooth with buttery graphics. With Google Now, you get just the right information at the right time. And with more than 1 million apps on Google Play, and thousands of Android devices, you've got the freedom to do what you want on any device you choose.
Android 4.4, KitKat It's our goal with Android KitKat to make an amazing Android experience available for everybody.
SOURCE: Android Authority