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  •      Android is an operating system for Mobile phones.
  •      Android is a Linux-based operating system designed primarily for touchscreen mobile devices such as smartphones and tablet  computers.   
  •       Android is also an operating system developed by Google.
  •       Android is open source and Google releases the code under the Appache design. This open source code and permissive licensing  allows the software to be freely modified and  distributed by device manufacturers, wireless carriers and enthusiast developers.
  •         Android is based on linux and offers you a great deal of customization in widgets and over millions of apps. Most of them are free of cost and can be installed on your phone just by clicking on install tab of the respective app in the Google Play Store apps.

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HISTORY OF ANDROID

                                                                                                               

2000WHAT IS ANDROID VERSION??

Android is released in series of Versions. Starting from 1.0 version ( where 2.0, 3.0, …… are latest releases). Google name these versions with some food items like ice cream, jelly bean, sandwich etc. which is one of the specialty of android versions.

Here are some of the Versions released by android.

  • 1.0 – Android beta.
  •  1.5 – Android Cupcake.
  •  1.6 – Android Donut.
  • 2.0/2.1 – Eclair.
  • 2.2.x – Froyo.
  • 2.3.x – Gingerbread.
  • 3.x – Honeycomb (used mainly for tablets.)
  • 4.0.x – Ice Cream Sandwich (both for phones and tablets.)

 

 JELLY BEAN 4.2

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  • Everything in Jelly Bean feels fast, fluid, and smooth.
  • Jelly Bean improves performance throughout the system, including faster orientation changes, quicker switching between recent applications, and smoother and more consistent rendering across the system through  triple buffering.
  • Jelly Bean has more reactive and uniform touch responses, and makes your Android device even more responsive by boosting our device’s CPU instantly when we touch the screen, and turns it down when we don’t need it to improve battery life.

 Jelly Bean 4.1

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  • Android 4.1, Jelly Bean, is the fastest and smoothest version of Android yet. Jelly Bean improves on the simplicity and beauty of Android 4.0, and introduces a new Google search experience on Android.

Ice Cream Sandwich

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  • The follow-up to Honeycomb was announced at Google IO in May 2011 and released in December 2011. Dubbed Ice Cream Sandwich and finally designated Android 4.0, Ice Cream Sandwich brings many of the design elements of Honeycomb to smartphones, while refining the Honeyco
  • The first device to launch with ICS was the Samsung Galaxy Nexus. The Motorola Xoom and the ASUS Transformer Prime were the first tablets to receive updates, while the Samsung Nexus S was the first smartphone to make the jump to Android 4.0.                                                                                                                            

 HONEY COMB

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Android 3.0 came out in February 2011 with the Motorola Xoom. It’s the first version of Android specifically made for tablets, and brings a lot of new UI elements to the table.  Things like a new System bar at the bottom of the screen to replace the Status bar we see on phones, and a new recent applications button are a great addition for the Android tablets.

  •    The Gmail app and the Talk app  both make great use of fragments, and the Talk app has video chat and calling support built in.  Under this, 3D rendering and hardware acceleration have been greatly improved.
  • We can’t talk about Honeycomb without mentioning that it also shows Google’s new distribution method, where manufacturers are given the source code and license to use it only after their hardware choices have been approved by Google.  This improves  third party development, as the source code is no longer available for all to download and build, but Google assures us they will address this issue in the future.
  • Improvements to Honeycomb were announced at Google IO in May 2011 as Android 3.1, and Android 3.2 has followed.

Android 2.3-2.4 – Gingerbread

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  • Android 2.3 came out  in December 2010, and like Eclair, has a new “Googlephone” to go along with — the Nexus S.  Gingerbread brings a few UI enhancements to Android, things like a more consistent feel across menus and dialogs, and a new black notification bar, but still looks and feels like the Android we’re used to, with the addition of a slew of new language support.
  • Gingerbread brings support for new technology as well.  NFC (Near Field Communication) is now supported, and SIP (Internet calling) support is now native on Android. Further optimizations for better battery life round out a nice upgrade.
  • Behind the scenes, the fellows at Mountain View spent time with more JIT (the Just-In-Time compiler) optimizations, and made great improvements to Androids garbage collection, which should stop any stuttering and improve UI smoothness.  Round that out with new a multi-media framework for better support of sound and video files.  
  • Android 2.4 also is in the Gingerbread family.

Android 2.2 – Froyo

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  • Android 2.2 was announced in May 2010 at the Google IO conference in San Francisco. The single largest change was the introduction of the Just-In-Time Compiler — or JIT – which significantly speeds up the phone’s processing power.
  • Along with the JIT, Android 2.2 also brings support for Adobe Flash 10.1. That means you can play your favorite Flash-based games in Android’s web browser.
  • Froyo also brought native support for tethering, meaning we could use your Android smartphone’s data connection to provide Internet (wirelessly or with a USB cable) to just about any device we want.

Android 2.0/2.01/2.1 – Éclair

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  • Eclair was a pretty major step up over its predecessors. Introduced in late 2009, Android 2.0 first appeared on the Motorola Droid, bringing improvements in the browser, Google Maps, and a new user interface. Google Maps Navigation also was born in Android 2.0, quickly bringing the platform on par with other stand-along GPS navigation systems.
  • Android 2.0 quickly gave way to 2.0.1, which the Droid received in December 2009, mainly bringing bugfixes. And to date, the Droid remains the phone phone to have explicitly received Android 2.0.1.
  • The now-defunct Google Nexus One was the first device to receive Android 2.1 when it launched in January 2010, bringing a souped-up UI with cool 3D-style graphics. From there, the rollout of Android 2.1 has been relatively slow and painful. Manufacturers skipped Android 2.0 in favor of the latest version but needed time to tweak their customizations, such as Motorola’s Motoblur.
  • HTC’s Desire and Legend phones launched with Android 2.1 later in the year, touting a new and improved Sense user interface.

Android 1.6 – Donut

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  • Donut, released in September 2009, built on the features that came with Android 1.5, and expanded them. While not very rich in the eye-candy department, Android 1.6 made some major improvements behind the scenes, and provided the framework base for the amazing features to come.  To the end user, the two biggest changes would have to be the improvements to the Android Market, and universal search.
  • Behind the screen, Donut brought support for higher resolution touchscreens,  much improved camera and gallery support, and perhaps most importantly, native support for Sprint and Verizon phones. Without the technology in Android 1.6, there would be no Motorola Droid X or HTC Evo 4G.
  • The devices released with Android 1.6 cover a wide range of taste and features, including the Motorola Devour, the Garminphone, and the Sony Ericsson Xperia X10.

Android 1.5 – Cupcake

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  • Cupcake was the first major overhaul of the Android OS.  The Android 1.5 SDK was released in April 2009 and brought along plenty of UI changes, the biggest probably being support for widgets and folders on the homescreens. 
  • There were plenty of changes behind the scenes, too.  Cupcake brought features like improved Bluetooth support, camcorder functions, and new upload services like YouTube and Android 1.5 ushered in the era of the modern Android phone, and the explosion of devices included favorites like the HTC Hero/Eris, theSamsung Moment, and the Motorola Cliq.
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