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ipad

Published on January 2017 | Categories: Documents | Downloads: 4 | Comments: 0
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The iPad ( /ˈaɪpæd/ EYE-pad) is a line of tablet computers designed, developed and marketed by Apple Inc., primarily as a platform for audio-visual media including books, periodicals, movies, music, games, and web content. The iPad was introduced on January 27, 2010 by Apple's then-CEO Steve Jobs.[19] Its size and weight fall between those of contemporary smartphones and laptop computers. The iPad runs the same operating system as the iPod Touch and iPhone—and can run its own applications as well as iPhone applications. Without modification, the iPad will only run programs approved by Apple and distributed via the Apple App Store (with the exception of programs that run inside the iPad's web browser). Like iPhone and iPod Touch, the iPad is controlled by a multitouch display—a departure from most previous tablet computers, which used a pressure-triggeredstylus—as well as a virtual onscreen keyboard in lieu of a physical keyboard. The iPad uses a Wi-Fi connection to access local area networks and the Internet. Some models also have a 3G wireless network interface which can connect to HSPA or EVDO data networks and on to the Internet. Since the release of iOS 5, the device does not need to be managed and synced by iTunes running on a personal computer via USB cable. Apple released the first iPad in April 2010, and sold 3 million of the devices in 80 days.[20] During 2010, Apple sold 14.8 million iPads worldwide,[7][8][9]representing 75 percent of tablet PC sales at the end of 2010.[21] By the release of the iPad 2 in March 2011, more than 15 million iPads had been sold[22]—selling more than all other tablet PCs combined since the iPad's release.[23] In 2011, it is expected to take 83 percent of the tablet computing market share in the United States.[24]

Audio and output
The iPad has two internal mono speakers located on the bottom-right of the unit. In the original iPad, the speakers push sound through two small sealed channels leading to the three audio ports carved into the device,[17] while the iPad 2 has its speakers behind a single grill.[16] A volume switch is on the right side of the unit. A 3.5-mm TRRS connector audio-out jack on the top-left corner of the device provides stereo sound for headphones with or without microphones and/or volume controls. The iPad also contains a microphone that can be used for voice recording. The built-in Bluetooth 2.1 + EDR interface allows wireless headphones and keyboards to be used with the iPad.[64] However, the iOS does not currently support file transfer via Bluetooth.[65] iPad also features 1024 x 768 VGA video output for limited applications,[66] screen capture,[67] connecting an external display or television through an accessory adapter.

Applications:-

The iPad comes with several applications, including Safari, Mail, Photos, Video,

YouTube, iPod, iTunes, App Store, iBooks, Maps, Notes, Calendar, and Contacts.[115] Several are improved versions of applications developed for the iPhone or Mac.

Storage and SIM

The iPad 3G, unlike the Wi-Fi model, has a black plastic piece on the underside which allows cellular signals to pass through it.The iPad was released with three capacity options for storage: 16, 32, or 64 GB of

internal flash memory. All data are stored on the internal flash memory, with no option to expand storage. Apple sells a "camera connection kit" with an SD card reader, but it can only be used to transfer photos and videos.[75] The iPad's touchscreen display is a 1024 × 768 pixel, 7.75×5.82 in (197×148 mm) liquid crystal display (diagonal 9.7 in (246.4 mm)), with fingerprint- and scratch-resistant glass. Steve Jobs backed the choice of screen size, saying a 7-inch screen would be "too small to express the software" and that 10 inches was the minimum for a tablet screen.[55]Like the iPhone, the iPad is designed to be controlled by bare fingers; normal, non-conductive gloves and styli do not work,[56] although there are special gloves and capacitive styli designed for this use.[57][58]

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