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Things to know

Apps

In common usage, the term app is short for application on smart phones and tablet computers. Tablet operating systems have their own online shops, where such apps are available and can be installed directly. Examples are the Android Market for Android tablets and the Apple App Store for the iPad.

Widgets

Widgets are small but often very useful assistants (programs) directly on the desktop. This can be time, calendar, weather, RSS news feeds, virtual notepad etc. or even a switch, for example to activate or deactivate the WLAN. Widgets are usually a separate component of graphical window systems. The user gets informations on the surface of the application window and can input data.

Android History

Android Android is a software stack for mobile devices such as mobile telephones and tablet computers developed by Google Inc and the Open Handset Alliance. It is based on Linux kernel 2.6. Android is available under a free and open source software license.
Android has seen a number of updates since its original release.

Android 4.0 - Ice Cream Sandwich - 4Q/2011
* Combination of Android 2.x (Gingerbread/smartphones) and 3.x (Honeycomb/tablets)

Android 3.x - Honeycomb - 23. Feb. 2011 (only tablets)
* based on Linux kernel 2.6.36 * specifically optimized for tablets and devices with larger screens sizes
* Refined multitasking, home screen customization, widgets
* Bluetooth tethering

Android 2.3.4 - Gingerbread - 29. April 2011 (only smartphones)
* Video- and voice-chat with Google Talk
* encoded transmission of calendar entries and contacts

Android 2.3.3 - Gingerbread - 23. Feb. 2011 (only smartphones)
* dual-core-support

Android 2.3 - Gingerbread - 6. Dez. 2010
* UI refinements for simplicity and speed
* New keyboard and faster text input
* One-touch word selection and copy/paste
* Near field communication (NFC)
* Internet calling (SIP)

Android 2.2 - Froyo - 20. Mai 2010
* based on Linux kernel 2.6.32
* Apps can be moved to SD card
* Improved Exchange support
* Wi-Fi hotspot tethering
* Adobe Flash 10.1 support

Android 2.1 - Eclair - 12. Jan. 2010
* Animated backgrounds
* support for voice controls throughout the entire OS

Android 2.0 - Eclair - 26. Okt. 2009
* based on Linux kernel 2.6.29
* Multiple accounts for email and contacs syncronisation
* Microsoft Exchange Support
* Bluetooth 2.1
* New browser user interface and support for HTML5
* New calendar features

Android 1.6 - Donut - 15 Sep. 2009
* Quick Search Box and Voice Search
* Toggle between sill and video capture modes, gallery
* Battery usage indicator
* CDMA Support
* multilingual text-to-speech function, gestures and several screen resolutions
* Virtual Private Networks

Android 1.5 - Cupcake - 30. Apr. 2009
* official update - first devices: T-Mobile G1 and HTC Magic * basec on Linux kernel 2.6.27
* Faster Camera start-up and image capture
* Much faster acquisition of GPS location (powered by SUPL AGPS)
* On-screen soft keyboard
* Directly upoad videos to YouTube and Picasa

Android 1.1 - - 11. Feb. 2009
* Update for T-Mobile G1 only

Android 1.0 - - 23. Sep. 2009
* First Version
* First Android device: HTC Dream (G1)
August 2005
* Google acquired Android Inc.

Oktober 2003
* Android, Inc. was founded in Palo Alto, California