Tablet PC's
Features touch pad
The digital touch pads have a touch screen on which the user interacts with the fingers. Fingers somehow replace the mouse.Software interprets the touch and movement of fingers on the screen.
They exist in two forms:
convertible: the form of a traditional laptop keyboard that containsmost of the electronics, but the screen can be detached, so thatonly the screen becomes a touch pad, 5
slate in the form of a screen that contains all the electronics, with your fingers or a stylus to interact. The physical keyboard is replaced by a virtual keyboard.
Some touch pads offer additional accessories that are generally referred to dock or dock. These accessories include a physical keyboard and / or Hi-Fi speakers.
The screen display can be in portrait and landscape mode by rotating the touch pad.
The touch pads can be fitted with different ports (USB, PCMCIA / PC Card, FireWire, Wi-Fi, IrDA, Bluetooth ...). The serial and parallel ports are not included (adapters are available as accessories). They are able to connect to a network via WiFi.
Hardware key
Components ensuring operation of the device:
Rechargeable battery.
Motherboard: The motherboard of a tablet is very similar to that of a traditional laptop or a netbook, but are often specific models,tailor-made for the product in question.
Processor, possibly supported by a graphics processor.
RAM.
Memory unit for storing data, SDS, similar to a laptop or flash memory.
Components providing the man-machine interface and communication with other devices:
Touch screen: uses the pointing device. The user can also typewith a virtual keyboard on the capacitive touch screen.
One or more speakers, a microphone.
Accelerometer and / or gyroscope: Unit to detect physical movement and position of the device in space.
Wireless connectivity: Wi-Fi, Bluetooth and possibly UMTS /HSDPA (3G).
Other features adding various accessories: camera (s) ...
Anroied
OriginAndroid is named after the startup of the same name that specializes in developing mobile applications that Google bought in August 20 055, a name which is itself an "android", which means a robot built at the image of a people. The software, which was called by the gPhone rumors of markets, is offered for free and freely modifiable to mobile phone manufacturers, which facilitates its adoption. The gPhone was launched in October 2008 in the United States in an exclusive distribution partnership between Google and T-Mobile.
Bugdroid
The character named Bugdroid is the little green robot used by Google to showcase Android. This character is licensed under "Creative Commons by (3.0)" and can be used librement6.
The site Engadget7 Bugdroid announced that the Android logo is actually a character in a game on the Atari 1990: Gauntlet: The Third Encounter.
Features
In front of the Googleplex, a statue of the robot Android accompanied by objects symbolizing its different versions.
Android is an operating system based on a core Linux8, it has a specific interface, developed in Java programs are executed through an interpreter, JIT, however, it is possible to override this interface in their applications programming in C, but Work will be greater portability. While the majority of Android devices are based on the ARM architecture, the heterogeneity of versions and coprocessors can vary greatly from one manufacturer to another. To communicate with devices, Android uses HAL, considered obsolete since 2010 by many GNU / Linux as its main functions are now integrated into udev.
Android was designed to best integrate existing applications like Google's mail service Gmail, the mapping, Google Maps, or Google Calendar, Google Talk, YouTube. Particular emphasis is placed on the geolocation with Google Latitude and weather corresponding to the nearest city available on the main menu (seen on HTC Sense).
XML interfaces
Approaching the operation of Flex (ActionScript / MXML) or. NET, Android provides a development kit (SDK) that allows to develop applications specific to the mobile to be implemented on the platform.
Development
Version
Graph showing the proportion of each Android version of the September 2, 2011
Main article: History of versions of Android.
The different versions of Android all have names desserts (in English) since the release of version 1.5 and follow a logical alphabetical (A to Z):
1.0: Version known almost exclusively for developers because it is the version of the SDK distributed prior to the release of the first Android phone, Sdk distributed in late 2007, that can be called Alpha.
1.1: Version included in the first phone, the HTC Dream, unfounded rumors on the name Beta.
1.5: Cupcake (Cupcake), released in April 2009, the last formal review in May 2010;
1.6: Donut (Doughnut), released in September 2009, the last formal review in May 2010;
2.0 (2.0.1) version called Flash at first, but, because of many bugs, quickly replaced by 2.0.1 and by 2.1 (little known version)
2.1: Lightning, released in January 2010, the last formal review in May 2010;
2.2 (2.2.2): FroYo (Frozen Yogurt: Yogurt ice), released in May 2010, the last formal review in July 2010;
2.3 (2.3.7) 9: Gingerbread (gingerbread), exit 6 December 2010, current version for smartphones and small tablets;
3.0 (3.2): Honeycomb10 (Honeycomb), Exit 26 January 2011, current version for large shelves and TV connectés11;
4.0: Sandwich12 Ice Cream (Ice Cream Sandwich), unified version for Smartphone, Tablet and GoogleTV13 combining Gingerbread and Honeycomb, release 19 October 2011.
?.? : Jelly Bean: assumed name for the next version Ice Cream Sandwich [ref. required]
Andy Rubin, vice president of engineering at Google, said that the pace of updates to Android will be slower. Thus, after the release of Gingerbread, there should be a new version every year, because of the maturity of the system exploitation14.
Call for the open source community [edit]
In the message presentation video of Android, Sergey Brin said Google had on the community of open source developers to create a truly innovative operating system with SDK available at: http://developer.android. com /. He also indicated that overall premium dollars15 10 million would be allocated to the developers of the best applications in the Android Developer Challenge.
On May 12, 2008, Google announced the list of 50 applications approved for funding through this competition. These 50 applications are for the most use of location-based services and social networks. All participants are then hand over the sum of 25,000 dollars per project to continue development. The second part of the challenge is then launched in order to retain 20 final projects through funding to the tune of 275,000 dollars for the first ten and one hundred thousand dollars for the other ten. A video presentation of Android was put online October 23, 2008, date of publication of source code Google16 and the list of winning applications of the first Android Developer Challenge was published by Google.
Submissions of the second Android Developer Challenge ended August 31, 2009 and final results were announced in November 2009.
Concepts and innovations
Capture the screen of the reception of Android 1.6 with no overlay
Virtual offices
The office is spread over three parts (or more). Each is customizable, you can put shortcuts (to applications, files, folders, contacts, etc.). Or widgets (calendar, clock, notes, etc.).. The background image extends on three sides and moves slightly when changing the game, giving the impression that the content is part of the decor. However, some manufacturers like HTC alter this office: Sense interface is equipped with 7 offices, with a custom menu. Sony Ericsson, LG and Samsung also benefit from the openness of Android Android interface to modify the original.Several manufacturers of overlays have been developed. The oldest and one that greatly changes the interface is HTC Sense, the one that wants to be very close to original Android Samsung TouchWiz while the latter is to be launched Sony Ericsson UI.
One consequence of customization by manufacturers is that when a new version of Android comes out, each manufacturer must make the adjustments in its own version. As a result, the update is ever performed or released several weeks or months after the basic version. For manufacturers, this customization can control their product, as well as add value to their phone, not to be a simple assembler for computers. It is always customize the user interface, as each mobile phone, as it existed before the advent of smartphones.
Widgets
As the offices of recent operating systems, it is possible to place widgets on the desktop. They allow variables to provide information and provide interaction.
Centralization of notifications [edit]
The top bar receives the statutes (networks used, battery level, modes vibrate / ring / silent alarm, etc.). And notifications. These applications come from, and can warn of incoming emails, text messages, missed calls, or display information about Google Talk, to the advancement of current downloads, etc..
Electronic compass
Already, many programs take advantage of an electronic compass built into some cameras, the first being that Google Maps Street View offers by using the compass and accelerometer, which makes it easier to navigate. In other cases, Google Maps inferred direction (like all software using GPS) coordinates above.
Questions and Answers
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