IPad
Encyclopedia
The iPad is a line of tablet computer
Tablet computer
A tablet computer, or simply tablet, is a complete mobile computer, larger than a mobile phone or personal digital assistant, integrated into a flat touch screen and primarily operated by touching the screen...

s 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
Steve Jobs
Steven Paul Jobs was an American businessman and inventor widely recognized as a charismatic pioneer of the personal computer revolution. He was co-founder, chairman, and chief executive officer of Apple Inc...

. Its size and weight fall between those of contemporary smartphone
Smartphone
A smartphone is a high-end mobile phone built on a mobile computing platform, with more advanced computing ability and connectivity than a contemporary feature phone. The first smartphones were devices that mainly combined the functions of a personal digital assistant and a mobile phone or camera...

s and laptop computers. The iPad runs the same operating system as the iPod Touch
IPod Touch
The iPod Touch is a portable media player, personal digital assistant, handheld game console, and Wi-Fi mobile device designed and marketed by Apple Inc. The iPod Touch adds the multi-touch graphical user interface to the iPod line...

 and iPhone
IPhone
The iPhone is a line of Internet and multimedia-enabled smartphones marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007, and released on June 29, 2007...

—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
Web browser
A web browser is a software application for retrieving, presenting, and traversing information resources on the World Wide Web. An information resource is identified by a Uniform Resource Identifier and may be a web page, image, video, or other piece of content...

).

Like iPhone and iPod Touch, the iPad is controlled by a multitouch display—a departure from most previous tablet computers, which used a pressure-triggered stylus
Stylus (computing)
In computing, a stylus is a small pen-shaped instrument that is used to input commands to a computer screen, mobile device or graphics tablet...

—as well as a virtual onscreen keyboard in lieu of a physical keyboard. The iPad uses a Wi-Fi
Wi-Fi
Wi-Fi or Wifi, is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point. An access point has a range of about 20...

 connection to access local area network
Local area network
A local area network is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building...

s and the Internet.
Some models also have a 3G
3G
3G or 3rd generation mobile telecommunications is a generation of standards for mobile phones and mobile telecommunication services fulfilling the International Mobile Telecommunications-2000 specifications by the International Telecommunication Union...

 wireless network interface which can connect to HSPA
High Speed Packet Access
High Speed Packet Access is an amalgamation of two mobile telephony protocols, High Speed Downlink Packet Access and High Speed Uplink Packet Access , that extends and improves the performance of existing WCDMA protocols...

 or EV-DO
Evolution-Data Optimized
 Evolution-Data Optimized or Evolution-Data only is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access...

 data networks and on to the Internet.
Since the release of iOS 5, the device does not need to be managed and synced
File synchronization
File synchronization in computing is the process of ensuring that computer files in two or more locations are updated via certain rules....

 by iTunes
ITunes
iTunes is a media player computer program, used for playing, downloading, and organizing digital music and video files on desktop computers. It can also manage contents on iPod, iPhone, iPod Touch and iPad....

 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. During 2010, Apple sold 14.8 million iPads worldwide, representing 75 percent of tablet PC sales at the end of 2010.

By the release of the iPad 2
IPad 2
The iPad 2 is the second and current generation of the iPad, a tablet computer designed, developed and marketed by Apple. It serves primarily as a platform for audio-visual media including books, periodicals, movies, music, games, presentations and web content, and is available in black or white...

 in March 2011, more than 15 million iPads had been sold—selling more than all other tablet PCs combined since the iPad's release. In 2011, it is expected to take 83 percent of the tablet computing market share in the United States.

Before the iPad's launch

Apple's first tablet computer was the Newton
Newton (platform)
The Newton platform was an early personal digital assistant and the first tablet platform developed by Apple, the second platform being iOS, used in the iPhone, iPod Touch and iPad. Development of the Newton platform started in 1987 and officially ended on February 27, 1998. Some electronic...

 MessagePad 100, introduced in 1993, which led to the creation of the ARM6
ARM architecture
ARM is a 32-bit reduced instruction set computer instruction set architecture developed by ARM Holdings. It was named the Advanced RISC Machine, and before that, the Acorn RISC Machine. The ARM architecture is the most widely used 32-bit ISA in numbers produced...

 processor core with Acorn Computers
Acorn Computers
Acorn Computers Ltd. was a British computer company established in Cambridge, England, in 1978. The company produced a number of computers which were especially popular in the UK. These included the Acorn Electron, the BBC Micro, and the Acorn Archimedes...

. Apple also developed a prototype PowerBook Duo
PowerBook Duo
The PowerBook Duo was a line of small subnotebooks manufactured and sold by Apple Computer from 1992 until 1997 as a more compact companion to the PowerBook line. Improving upon the PowerBook 100's portability , the Duo came in seven different models...

-based tablet, the PenLite, but decided not to sell it in order to avoid hurting MessagePad sales. Apple released several more Newton-based PDAs; the final one, the MessagePad 2100, was discontinued in 1998.

Apple re-entered the mobile-computing markets in 2007 with the iPhone. Smaller than the iPad but featuring a camera and mobile phone, it pioneered the multitouch finger-sensitive touchscreen interface of Apple's iOS mobile operating system. By late 2009, the iPad's release had been rumored for several years. Such speculation mostly talked about "Apple's tablet"; specific names included iTablet and iSlate. The actual name is reportedly an homage to the Star Trek
Star Trek
Star Trek is an American science fiction entertainment franchise created by Gene Roddenberry. The core of Star Trek is its six television series: The Original Series, The Animated Series, The Next Generation, Deep Space Nine, Voyager, and Enterprise...

 PADD, a fictional device very similar in appearance to the iPad. The iPad was announced on January 27, 2010, by Steve Jobs
Steve Jobs
Steven Paul Jobs was an American businessman and inventor widely recognized as a charismatic pioneer of the personal computer revolution. He was co-founder, chairman, and chief executive officer of Apple Inc...

 at an Apple press conference at the Yerba Buena Center for the Arts
Yerba Buena Center for the Arts
Yerba Buena Center for the Arts is a multi-disiplinary contemporary arts center in San Francisco, California, United States. Located in Yerba Buena Gardens, YBCA features visual art, performance, and film/video that celebrates local, national, and international artists and the Bay Area's diverse...

 in San Francisco.

Jobs later said that Apple began developing the iPad before the iPhone, but temporarily shelved the effort upon realizing that its ideas would work just as well in a mobile phone. The iPad's internal codename was K48, which was revealed in the court case surrounding leaking of iPad information before launch.

First generation

Apple began taking pre-orders for the iPad from U.S. customers on March 12, 2010. The only major change to the device between its announcement and being available to pre-order was the change of the behavior of the side switch from sound muting to that of a screen rotation lock. The Wi-Fi version of the iPad went on sale in the United States on April 3, 2010. The Wi-Fi + 3G version was released on April 30. 3G service in the United States is provided by AT&T and was initially sold with two prepaid contract-free data plan options: one for unlimited data and the other for 250 MB per month at half the price. On June 2, 2010, AT&T announced that effective June 7 the unlimited plan would be replaced for new customers with a 2 GB plan at slightly lower cost; existing customers would have the option to keep the unlimited plan. The plans are activated on the iPad itself and can be canceled at any time.

The iPad was initially only available online at The Apple Store as well as the company's retail locations. The iPad has since been available for purchase through many retailers including Amazon, Wal-Mart
Wal-Mart
Wal-Mart Stores, Inc. , branded as Walmart since 2008 and Wal-Mart before then, is an American public multinational corporation that runs chains of large discount department stores and warehouse stores. The company is the world's 18th largest public corporation, according to the Forbes Global 2000...

, Best Buy
Best Buy
Best Buy Co., Inc. is an American specialty retailer of consumer electronics in the United States, accounting for 19% of the market. It also operates in Mexico, Canada & China. The company's subsidiaries include Geek Squad, CinemaNow, Magnolia Audio Video, Pacific Sales, and, in Canada operates...

, Verizon, and AT&T
AT&T
AT&T Inc. is an American multinational telecommunications corporation headquartered in Whitacre Tower, Dallas, Texas, United States. It is the largest provider of mobile telephony and fixed telephony in the United States, and is also a provider of broadband and subscription television services...

. The iPad was launched in Australia, Canada, France, Germany, Italy, Japan, Spain, Switzerland and the United Kingdom on May 28. Online pre-orders in those countries began on May 10. Apple released the iPad in Austria, Belgium, Hong Kong, Ireland, Luxembourg, Mexico, The Netherlands, New Zealand and Singapore on July 23, 2010. Israel briefly prohibited importation of the iPad because of concerns that its Wi-Fi might interfere with other devices. On September 17, 2010, the iPad officially launched in China.

The device was initially popular with 300,000 iPads being sold on their first day of availability. By May 3, 2010, Apple had sold a million iPads, this was in half the time it took Apple to sell the same number of original iPhones. During the October 18, 2010, Financial Conference Call, Steve Jobs announced that Apple had sold more iPads than Macs for the Fiscal Quarter. In total, Apple sold more than 15 million first generation iPads prior to the launch of the iPad 2.

iPad 2

Apple Inc. CEO Steve Jobs
Steve Jobs
Steven Paul Jobs was an American businessman and inventor widely recognized as a charismatic pioneer of the personal computer revolution. He was co-founder, chairman, and chief executive officer of Apple Inc...

 unveiled the iPad 2, the second generation of the device, at a March 2, 2011, press conference, despite being on medical leave at the time. About 33% thinner than its predecessor, the iPad 2 has a better processor, a dual core Apple A5
Apple A5
The Apple A5 is a package on package system-on-a-chip designed by Apple and manufactured by Samsung to replace the Apple A4. The chip commercially debuted with the release of Apple's iPad 2 tablet, and also powers the iPhone 4S...

 that Apple says is twice as fast as its predecessor for CPU operations and up to nine times as fast for GPU operations. It includes front and back cameras that support the FaceTime
FaceTime
FaceTime is a video calling software application and related protocol developed by Apple for supported mobile devices running the iOS, in addition to Macintosh computers running Mac OS X 10.6.6 and higher...

 video calling application, as well as a three-axis gyroscope
Gyroscope
A gyroscope is a device for measuring or maintaining orientation, based on the principles of angular momentum. In essence, a mechanical gyroscope is a spinning wheel or disk whose axle is free to take any orientation...

. It retains the original's 10-hour battery life and has a similar pricing scheme.

The iPad 2 has been available for purchase, depending on stock availability, since March 11, 2011, at Apple retail stores in the United States, as well as to United States customers shopping online at Apple's retail website. The iPad 2 was released internationally in 25 other countries on March 25, 2011, including Australia, Canada, France, Germany, Mexico and the United Kingdom, but not Japan as originally scheduled due to the earthquake and tsunami
2011 Tōhoku earthquake and tsunami
The 2011 earthquake off the Pacific coast of Tohoku, also known as the 2011 Tohoku earthquake, or the Great East Japan Earthquake, was a magnitude 9.0 undersea megathrust earthquake off the coast of Japan that occurred at 14:46 JST on Friday, 11 March 2011, with the epicenter approximately east...

.

Screen and input

The iPad's touchscreen
Touchscreen
A touchscreen is an electronic visual display that can detect the presence and location of a touch within the display area. The term generally refers to touching the display of the device with a finger or hand. Touchscreens can also sense other passive objects, such as a stylus...

 display is a 1024 × 768 pixel, 7.75 by 5.82 in (196.9 by 147.8 mm) liquid crystal display
Liquid crystal display
A liquid crystal display is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals . LCs do not emit light directly....

 (diagonal 9.7 in (246.4 mm)), with fingerprint-
Lipophobicity
Lipophobicity, also sometimes called lipophobia, is a chemical property of chemical compounds which means "fat rejection", literally "fear of fat". Lipophobic compounds are those not soluble in lipids or other non-polar solvents...

 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. Like the iPhone, the iPad is designed to be controlled by bare fingers; normal, non-conductive gloves and styli
Stylus
A stylus is a writing utensil, or a small tool for some other form of marking or shaping, for example in pottery. The word is also used for a computer accessory . It usually refers to a narrow elongated staff, similar to a modern ballpoint pen. Many styli are heavily curved to be held more easily...

 do not work, although there are special gloves and capacitive styli designed for this use.

The display responds to other sensors: an ambient light sensor to adjust screen brightness and a 3-axis accelerometer
Accelerometer
An accelerometer is a device that measures proper acceleration, also called the four-acceleration. This is not necessarily the same as the coordinate acceleration , but is rather the type of acceleration associated with the phenomenon of weight experienced by a test mass that resides in the frame...

 to sense iPad orientation and switch between portrait and landscape
Page orientation
Page orientation is the way in which a rectangular page is oriented for normal viewing. The two most common types of orientation are portrait and landscape...

 modes. Unlike the iPhone and iPod Touch's built-in applications, which work in three orientations (portrait, landscape-left and landscape-right), the iPad's built-in applications support screen rotation in all four orientations, including upside-down. Consequently, the device has no intrinsic "native" orientation; only the relative position of the home button changes.

There are four physical switches on the iPad, including a home button near the display that returns the user to the main menu, and three plastic physical switches on the sides: wake/sleep and volume up/down, plus a software-controlled switch whose function has changed with software updates. Originally the switch locked the screen to its current orientation, but the iOS 4.2 changed it to a mute switch, with rotation lock now available in an onscreen menu. In the iOS 4.3 update, released with the iPad 2, a setting was added to allow the user to specify whether the side switch was used for rotation lock or mute.

The original iPad had no camera; the iPad 2 has a front VGA camera and a rear-facing 720p
720p
720p is the shorthand name for 1280x720, a category of High-definition television video modes having a resolution of 1080 or 720p and a progressive scan...

 camera, both capable of still images and 30fps
Frame rate
Frame rate is the frequency at which an imaging device produces unique consecutive images called frames. The term applies equally well to computer graphics, video cameras, film cameras, and motion capture systems...

 video. The rear-facing camera has a 5x digital zoom
Digital zoom
Digital zoom is a method of decreasing the apparent angle of view of a digital photographic or video image. Digital zoom is accomplished by cropping an image down to a centered area with the same aspect ratio as the original, and usually also interpolating the result back up to the pixel...

 for still images only. Both shoot photo and video in a 4:3 fullscreen aspect ratio, unlike the iPhone 4
IPhone 4
The iPhone 4 is a touchscreen slate smartphone developed by Apple Inc. It is the fourth generation iPhone, and successor to the iPhone 3GS. It is particularly marketed for video calling , consumption of media such as books and periodicals, movies, music, and games, and for general web and e-mail...

, which shoots in a 16:9 widescreen aspect ratio. Unlike the iPhone, the iPad does not support tap to focus. The cameras allow FaceTime
FaceTime
FaceTime is a video calling software application and related protocol developed by Apple for supported mobile devices running the iOS, in addition to Macintosh computers running Mac OS X 10.6.6 and higher...

 video messaging with iPhone 4, iPod Touch 4, and Snow Leopard/Lion
Mac OS X Lion
Mac OS X Lion is the eighth and current major release of Mac OS X, Apple's desktop and server operating system for Macintosh computers....

 Macs
Macintosh
The Macintosh , or Mac, is a series of several lines of personal computers designed, developed, and marketed by Apple Inc. The first Macintosh was introduced by Apple's then-chairman Steve Jobs on January 24, 1984; it was the first commercially successful personal computer to feature a mouse and a...

.

Connectivity

The iPad can use Wi-Fi network trilateration
Trilateration
In geometry, trilateration is the process of determinating absolute or relative locations of points by measurement of distances, using the geometry of circles, spheres or triangles. In addition to its interest as a geometric problem, trilateration does have practical applications in surveying and...

 from Skyhook Wireless
Skyhook Wireless
Skyhook Wireless is a Boston-based company that developed a technology for determining geographical location using Wi-Fi as the underlying reference system. Using the MAC addresses of nearby wireless access points and proprietary algorithms, Skyhook's Wi-Fi Positioning System WPS can determine...

 to provide location information to applications such as Google Maps
Google Maps
Google Maps is a web mapping service application and technology provided by Google, free , that powers many map-based services, including the Google Maps website, Google Ride Finder, Google Transit, and maps embedded on third-party websites via the Google Maps API...

. The 3G model supports A-GPS
Assisted GPS
Assisted GPS, generally abbreviated as A-GPS or aGPS, is a system which can, under certain conditions, improve the startup performance, or time-to-first-fix of a GPS satellite-based positioning system. It is used extensively with GPS-capable cellular phones as its development was accelerated by...

 to allow its position to be calculated with GPS or relative to nearby cellphone towers; it also has a black strip on the back to aid 3G reception.

The iPad has a headphone jack
TRS connector
A TRS connector is a common family of connector typically used for analog signals including audio. It is cylindrical in shape, typically with three contacts, although sometimes with two or four . It is also called an audio jack, phone jack, phone plug, and jack plug...

 and a proprietary Apple dock connector
Dock Connector
A dock connector is a connector used to attach a mobile electronic device simultaneously to multiple external resources. The dock connector will typically carry a variety of signals and power, through a single connector, to simplify the process of docking the mobile device...

, but no Ethernet
Ethernet
Ethernet is a family of computer networking technologies for local area networks commercially introduced in 1980. Standardized in IEEE 802.3, Ethernet has largely replaced competing wired LAN technologies....

 or USB port.

Audio and output

The iPad has two internal mono speakers
Loudspeaker
A loudspeaker is an electroacoustic transducer that produces sound in response to an electrical audio signal input. Non-electrical loudspeakers were developed as accessories to telephone systems, but electronic amplification by vacuum tube made loudspeakers more generally useful...

 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, while the iPad 2 has its speakers behind a single grill.

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
Sound recording and reproduction
Sound recording and reproduction is an electrical or mechanical inscription and re-creation of sound waves, such as spoken voice, singing, instrumental music, or sound effects. The two main classes of sound recording technology are analog recording and digital recording...

.

The built-in Bluetooth 2.1 + EDR interface allows wireless headphones and keyboards to be used with the iPad. However, the iOS does not currently support file transfer via Bluetooth. iPad also features 1024 x 768 VGA video output for limited applications, screen capture, connecting an external display or television through an accessory adapter.

Power and battery

The iPad uses an internal rechargeable
Rechargeable battery
A rechargeable battery or storage battery is a group of one or more electrochemical cells. They are known as secondary cells because their electrochemical reactions are electrically reversible. Rechargeable batteries come in many different shapes and sizes, ranging anything from a button cell to...

 lithium-ion polymer (LiPo) battery. The batteries are made in Taiwan
Republic of China
The Republic of China , commonly known as Taiwan , is a unitary sovereign state located in East Asia. Originally based in mainland China, the Republic of China currently governs the island of Taiwan , which forms over 99% of its current territory, as well as Penghu, Kinmen, Matsu and other minor...

 by Simplo Technology (60%) and Dynapack International Technology. The iPad is designed to be charged with a high current of 2 amperes using the included 10 W
Watt
The watt is a derived unit of power in the International System of Units , named after the Scottish engineer James Watt . The unit, defined as one joule per second, measures the rate of energy conversion.-Definition:...

 USB power adapter. While it can be charged by a standard USB port from a computer, these are limited to 500 milliamperes (0.5 amps). As a result, if the iPad is running while powered by a normal USB computer port, it may charge very slowly, or not at all. High-power USB ports found in newer Apple computers and accessories provide full charging capabilities.

Apple claims that the battery for both generations of iPad can provide up to 10 hours of video, 140 hours of audio playback, or one month on standby. Like any rechargeable battery technology, the iPad's battery loses capacity over time, but is not designed to be user-replaceable. In a program similar to the battery-replacement program for the iPod
IPod
iPod is a line of portable media players created and marketed by Apple Inc. The product line-up currently consists of the hard drive-based iPod Classic, the touchscreen iPod Touch, the compact iPod Nano, and the ultra-compact iPod Shuffle...

 and the original iPhone, Apple will replace an iPad that does not hold an electrical charge with a refurbished iPad for a fee of US$99 plus $6.95 shipping. As a different unit is supplied, user data are not preserved. The refurbished unit will have a new case. The warranty on the refurbished unit may vary between jurisdictions.

Independent companies also provide a battery replacement service, returning the original unit with new battery but original case. Alternatively it is possible for a technically competent user to buy and install a new battery, which may invalidate any remaining warranty on the iPad. The task does not require soldering, but is technically challenging.

Storage and SIM

The iPad was released with three capacity options for storage: 16, 32, or 64 GB of internal flash memory
Flash memory
Flash memory is a non-volatile computer storage chip that can be electrically erased and reprogrammed. It was developed from EEPROM and must be erased in fairly large blocks before these can be rewritten with new data...

. All data is 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.

The side of the Wi-Fi
Wi-Fi
Wi-Fi or Wifi, is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point. An access point has a range of about 20...

 + 3G
3G
3G or 3rd generation mobile telecommunications is a generation of standards for mobile phones and mobile telecommunication services fulfilling the International Mobile Telecommunications-2000 specifications by the International Telecommunication Union...

 model has a micro-SIM slot (not mini-SIM
Subscriber Identity Module
A subscriber identity module or subscriber identification module is an integrated circuit that securely stores the International Mobile Subscriber Identity and the related key used to identify and authenticate subscriber on mobile telephony devices .A SIM is held on a removable SIM card, which...

).
The 3G iPad can be used with any compatible GSM carrier, unlike the iPhone, which is usually sold 'locked' to specific carriers
SIM lock
A SIM lock, simlock, network lock or subsidy lock is a capability built into GSM phones by mobile phone manufacturers. Network providers use this capability to restrict the use of these phones to specific countries and network providers...

. Japan is the exception to this, where the iPad 3G is locked to Softbank. In the U.S., data network access via T-Mobile's network is limited to slower EDGE
Enhanced Data Rates for GSM Evolution
Enhanced Data rates for GSM Evolution is a digital mobile phone technology that allows improved data transmission rates as a backward-compatible extension of GSM...

 cellular speeds because T-Mobile's 3G Network uses different frequencies. The iPad 2
IPad 2
The iPad 2 is the second and current generation of the iPad, a tablet computer designed, developed and marketed by Apple. It serves primarily as a platform for audio-visual media including books, periodicals, movies, music, games, presentations and web content, and is available in black or white...

 introduced a third tier of models with CDMA support for Verizon Wireless
Verizon Wireless
Cellco Partnership, doing business as Verizon Wireless, is one of the largest mobile network operators in the United States. The network has 107.7 million subscribers as of 2011, making it the largest wireless service provider in America....

 in the United States, available separately from the AT&T capable version.

Optional accessories

Apple offers several iPad accessories, most of which are adapters for the proprietary 30-pin dock connector
Dock Connector
A dock connector is a connector used to attach a mobile electronic device simultaneously to multiple external resources. The dock connector will typically carry a variety of signals and power, through a single connector, to simplify the process of docking the mobile device...

, the iPad's only port besides the headphone jack. A dock holds the iPad upright at an angle, and has a dock connector and audio line out port. Each generation of iPad requires a corresponding dock. A dock that included a physical keyboard is available only for the original iPad, but both generations are compatible with Bluetooth keyboards that also work with Macs
Macintosh
The Macintosh , or Mac, is a series of several lines of personal computers designed, developed, and marketed by Apple Inc. The first Macintosh was introduced by Apple's then-chairman Steve Jobs on January 24, 1984; it was the first commercially successful personal computer to feature a mouse and a...

 and PCs
Personal computer
A personal computer is any general-purpose computer whose size, capabilities, and original sales price make it useful for individuals, and which is intended to be operated directly by an end-user with no intervening computer operator...

. The iPad can be charged by a standalone power adapter ("wall charger") also used for iPods and iPhones, and a 10 W
Watt
The watt is a derived unit of power in the International System of Units , named after the Scottish engineer James Watt . The unit, defined as one joule per second, measures the rate of energy conversion.-Definition:...

 charger is included with the iPad.

Apple sells a camera connection kit that consists of two separate adapters for the dock connector, one to USB Type A, the other an SD
Secure Digital
Secure Digital is a non-volatile memory card format developed by the SD Card Association for use in portable devices. The SD technology is used by more than 400 brands across dozens of product categories and more than 8,000 models, and is considered the de-facto industry standard.Secure Digital...

 card reader. Adapter can be used to transfer photos and videos and to plug USB audio card
or MIDI keyboard
MIDI keyboard
A MIDI keyboard is typically a piano-style user interface keyboard device used for sending signals or commands over a USB or MIDI cable to other devices connected and operating on the same MIDI protocol interface...

.
A third party sells an adapter that includes USB, SD, and microSD on a single unit. An adapter to VGA connector
VGA connector
A Video Graphics Array connector is a three-row 15-pin DE-15 connector. The 15-pin VGA connector is found on many video cards, computer monitors, and some high definition television sets...

s allows the iPad to work with external monitors and projectors. Another adapter mirrors the screen onto HDMI
HDMI
HDMI is a compact audio/video interface for transmitting uncompressed digital data. It is a digital alternative to consumer analog standards, such as radio frequency coaxial cable, composite video, S-Video, SCART, component video, D-Terminal, or VGA...

 compatible devices in 1080p
1080p
1080p is the shorthand identification for a set of HDTV high-definition video modes that are characterized by 1080 horizontal lines of resolution and progressive scan, meaning the image is not interlaced as is the case with the 1080i display standard....

 and works with all apps and rotations. Unlike other adapters, it allows the iPad to charge through another dock connector. While the HDMI adapter was released with and advertised for the iPad 2
IPad 2
The iPad 2 is the second and current generation of the iPad, a tablet computer designed, developed and marketed by Apple. It serves primarily as a platform for audio-visual media including books, periodicals, movies, music, games, presentations and web content, and is available in black or white...

, it also works with the first generation iPad, the iPhone 4
IPhone 4
The iPhone 4 is a touchscreen slate smartphone developed by Apple Inc. It is the fourth generation iPhone, and successor to the iPhone 3GS. It is particularly marketed for video calling , consumption of media such as books and periodicals, movies, music, and games, and for general web and e-mail...

, and the fourth generation iPod Touch.
Smart Covers are screen protectors that magnetically attach and align to the face of the iPad 2. The cover has three folds which allow it to convert into a stand, which is also held together by magnets. While original iPad owners could purchase a black case that included a similarly folding cover, the Smart Cover is meant to be more minimal, easily detachable, and protects only the screen. Smart Covers have a microfiber
Microfiber
Microfiber or microfibre refers to synthetic fibers that measure less than one denier. The most common types of microfibers are made from polyesters, polyamides , and or a conjugation of polyester and polyamide.Microfiber is used to make non-woven, woven and knitted textiles...

 bottom that cleans the front of the iPad, which wakes up when the cover is removed. There are five different colors of both polyurethane and leather, with leather being more expensive. Smart Covers are not compatible with the original iPad.

Technical specifications

Model iPad (original) iPad 2
IPad 2
The iPad 2 is the second and current generation of the iPad, a tablet computer designed, developed and marketed by Apple. It serves primarily as a platform for audio-visual media including books, periodicals, movies, music, games, presentations and web content, and is available in black or white...

Announcement date January 27, 2010 March 2, 2011
US Release date April 3, 2010 March 11, 2011
Discontinued date March 2, 2011 In production
Display
Display device
A display device is an output device for presentation of information in visual or tactile form...

9.7 inches (246.4 mm) multitouch display at a resolution of 1024 × 768 pixel
Pixel
In digital imaging, a pixel, or pel, is a single point in a raster image, or the smallest addressable screen element in a display device; it is the smallest unit of picture that can be represented or controlled....

s with LED
Light-emitting diode
A light-emitting diode is a semiconductor light source. LEDs are used as indicator lamps in many devices and are increasingly used for other lighting...

 backlighting and a fingerprint and scratch-resistant coating
Processor
Central processing unit
The central processing unit is the portion of a computer system that carries out the instructions of a computer program, to perform the basic arithmetical, logical, and input/output operations of the system. The CPU plays a role somewhat analogous to the brain in the computer. The term has been in...

1 GHz Apple A4
Apple A4
The Apple A4 is a package on package system-on-a-chip designed by Apple and manufactured by Samsung. It combines an ARM Cortex-A8 CPU with a PowerVR GPU, and emphasizes power efficiency. The chip commercially debuted with the release of Apple's iPad tablet; followed shortly by the iPhone 4...

 system-on-a-chip
System-on-a-chip
A system on a chip or system on chip is an integrated circuit that integrates all components of a computer or other electronic system into a single chip. It may contain digital, analog, mixed-signal, and often radio-frequency functions—all on a single chip substrate...

 
1 GHz (dynamically clocked) dual-core Apple A5
Apple A5
The Apple A5 is a package on package system-on-a-chip designed by Apple and manufactured by Samsung to replace the Apple A4. The chip commercially debuted with the release of Apple's iPad 2 tablet, and also powers the iPhone 4S...

 system on a chip
Memory 256 MB DDR RAM built into Apple A4 package 512 MB DDR2
DDR2 SDRAM
DDR2 SDRAM is a double data rate synchronous dynamic random-access memory interface. It supersedes the original DDR SDRAM specification and has itself been superseded by DDR3 SDRAM...

 (1066 Mbit/s data rate) RAM built into Apple A5 package
Storage
Data storage device
thumb|200px|right|A reel-to-reel tape recorder .The magnetic tape is a data storage medium. The recorder is data storage equipment using a portable medium to store the data....

16, 32, or 64 GB
Gigabyte
The gigabyte is a multiple of the unit byte for digital information storage. The prefix giga means 109 in the International System of Units , therefore 1 gigabyte is...

Wireless
Wireless
Wireless telecommunications is the transfer of information between two or more points that are not physically connected. Distances can be short, such as a few meters for television remote control, or as far as thousands or even millions of kilometers for deep-space radio communications...

Wi-Fi Wi-Fi
Wi-Fi
Wi-Fi or Wifi, is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, or digital audio player, can connect to the Internet via a wireless network access point. An access point has a range of about 20...

 (802.11a/b/g/n), Bluetooth 2.1+EDR
Wi-Fi+3G 3G cellular HSDPA, 2G cellular EDGE
Edge
- Aviation :* Leading edge, a line connecting the forward-most points of a wing's profile* Trailing edge, the rear edge of the wing* Zivko Edge 540, an aerobatic aircraft- Mathematics, science and technology :...

 on 3G models
Geolocation
Geolocation
Geolocation is the identification of the real-world geographic location of an object, such as a radar, mobile phone or an Internet-connected computer terminal...

Wi-Fi Wi-Fi, Apple location databases
Wi-Fi+3G Assisted GPS
Assisted GPS
Assisted GPS, generally abbreviated as A-GPS or aGPS, is a system which can, under certain conditions, improve the startup performance, or time-to-first-fix of a GPS satellite-based positioning system. It is used extensively with GPS-capable cellular phones as its development was accelerated by...

, Apple databases, Cellular network
Radiolocation
Radiolocating is the process of finding the location of something through the use of radio waves. It generally refers to passive uses, particularly radar—as well as detecting buried cables, water mains, and other public utilities. It is similar to radionavigation, but radiolocation usually...

Environmental sensor
Sensor
A sensor is a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument. For example, a mercury-in-glass thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated...

s
Accelerometer
Accelerometer
An accelerometer is a device that measures proper acceleration, also called the four-acceleration. This is not necessarily the same as the coordinate acceleration , but is rather the type of acceleration associated with the phenomenon of weight experienced by a test mass that resides in the frame...

, ambient light sensor
Photodetector
Photosensors or photodetectors are sensors of light or other electromagnetic energy. There are several varieties:*Active pixel sensors are image sensors consisting of an integrated circuit that contains an array of pixel sensors, each pixel containing a both a light sensor and an active amplifier...

, magnetometer
Magnetometer
A magnetometer is a measuring instrument used to measure the strength or direction of a magnetic field either produced in the laboratory or existing in nature...

Additionally: gyroscope
Gyroscope
A gyroscope is a device for measuring or maintaining orientation, based on the principles of angular momentum. In essence, a mechanical gyroscope is a spinning wheel or disk whose axle is free to take any orientation...

Operating system
Operating system
An operating system is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system...

iOS 5.0
Battery
Battery (electricity)
An electrical battery is one or more electrochemical cells that convert stored chemical energy into electrical energy. Since the invention of the first battery in 1800 by Alessandro Volta and especially since the technically improved Daniell cell in 1836, batteries have become a common power...

Built-in lithium-ion polymer battery;
Weight Wi-Fi model: 1.5 lb (680.4 g)
3G model: 1.6 lb (725.7 g)
Wi-Fi model: 1.325 lb (601 g)
GSM 3G (AT&T) model: 1.351 lb (612.8 g)
CDMA 3G (Verizon) model: 1.338 lb (606.9 g)
Dimensions 9.56 x 9.5 x
Mechanical keys Home, sleep, volume rocker, variable function switch (originally screen rotation lock, mute in iOS 4.2, either in 4.3)
Camera Back 720
720p
720p is the shorthand name for 1280x720, a category of High-definition television video modes having a resolution of 1080 or 720p and a progressive scan...

p
Progressive scan
Progressive scanning is a way of displaying, storing, or transmitting moving images in which all the lines of each frame are drawn in sequence...

 HD
High-definition video
High-definition video or HD video refers to any video system of higher resolution than standard-definition video, and most commonly involves display resolutions of 1,280×720 pixels or 1,920×1,080 pixels...

 still and video camera
0.7 MP, 30fps
Frame rate
Frame rate is the frequency at which an imaging device produces unique consecutive images called frames. The term applies equally well to computer graphics, video cameras, film cameras, and motion capture systems...

 and 5x digital zoom
Front VGA-quality still camera, 0.3 MP
Greenhouse Gas Emissions 130 kg CO2e 105 kg CO2e

Manufacture

The iPad is assembled by Foxconn
Foxconn
The Foxconn Technology Group is a multinational business group anchored by the Hon Hai Precision Industry Co., Ltd. , a Taiwan-registered corporation headquartered in Tucheng, Taiwan...

, which also manufactures Apple's iPod, iPhone and Mac Mini, in its largest plant in Shenzhen
Shenzhen
Shenzhen is a major city in the south of Southern China's Guangdong Province, situated immediately north of Hong Kong. The area became China's first—and one of the most successful—Special Economic Zones...

, China. In April 2011 Foxconn announced that it would be moving production of the iPad and other Apple products to Brazil where it could begin production before the end of 2011.

iSuppli estimated that each iPad 16 GB Wi-Fi version costs US$259.60 to manufacture, a total that excludes research, development, licensing, royalty and patent costs.
Apple does not disclose the makers of iPad components, but teardown
Product teardown
A product teardown, or simply teardown, is the act of disassembling a product, such as a television set, to identify its component parts and functions. For products having secret technology, such as the Mikoyan-Gurevich MiG-25, the process may be secret...

 reports and analysis from industry insiders indicate that various parts and their suppliers include:
  • Apple A4
    Apple A4
    The Apple A4 is a package on package system-on-a-chip designed by Apple and manufactured by Samsung. It combines an ARM Cortex-A8 CPU with a PowerVR GPU, and emphasizes power efficiency. The chip commercially debuted with the release of Apple's iPad tablet; followed shortly by the iPhone 4...

     SoC
    System-on-a-chip
    A system on a chip or system on chip is an integrated circuit that integrates all components of a computer or other electronic system into a single chip. It may contain digital, analog, mixed-signal, and often radio-frequency functions—all on a single chip substrate...

    : Samsung
  • NAND flash RAM chips: Toshiba
    Toshiba
    is a multinational electronics and electrical equipment corporation headquartered in Tokyo, Japan. It is a diversified manufacturer and marketer of electrical products, spanning information & communications equipment and systems, Internet-based solutions and services, electronic components and...

     and Samsung
    Samsung
    The Samsung Group is a South Korean multinational conglomerate corporation headquartered in Samsung Town, Seoul, South Korea...

     (64 GB model)
  • Touch-screen chips: Broadcom
    Broadcom
    Broadcom Corporation is a fabless semiconductor company in the wireless and broadband communication business. The company is headquartered in Irvine, California, USA. Broadcom was founded by a professor-student pair Henry Samueli and Henry T. Nicholas III from the University of California, Los...

  • IPS Display: LG Display
  • Touch panels: Wintek
    Wintek
    Wintek is a maker of electronic components, mainly touch screens for devices such as Apple's iPhone.-History:Wintek was established in 1990 and produces components in China, Taiwan and India.-Worker illness controversy:...

     (after TPK Touch Solutions was unable to fulfill its orders, delaying the iPad's release from late March to early April)
  • Case: Catcher Technologies
  • LCD drivers: Novatek Microelectronics
  • Batteries: 60% are made in Taiwan by Simplo Technology, 40% by Dynapack International
  • Accelerometer: STMicroelectronics
    STMicroelectronics
    STMicroelectronics is an Italian-French electronics and semiconductor manufacturer headquartered in Geneva, Switzerland.While STMicroelectronics corporate headquarters and the headquarters for EMEA region are based in Geneva, the holding company, STMicroelectronics N.V. is registered in Amsterdam,...


Software

Like the iPhone, with which it shares a development environment
Development environment
In hosted software development, a development environment refers to a server tier designated to a specific stage in a release process....

 (iPhone SDK
IPhone SDK
The iOS SDK is a software development kit developed by Apple Inc. and released in February 2008 to develop native applications for iOS.-History:...

, or software development kit
Software development kit
A software development kit is typically a set of software development tools that allows for the creation of applications for a certain software package, software framework, hardware platform, computer system, video game console, operating system, or similar platform.It may be something as simple...

, version 3.2 onwards), the iPad only runs its own software, software downloaded from Apple's App Store, and software written by developers who have paid for a developer's license on registered devices. The iPad runs almost all third-party iPhone applications, displaying them at iPhone size or enlarging them to fill the iPad's screen. Developers may also create or modify apps to take advantage of the iPad's features. Application developers use iPhone SDK for developing applications for iPad. The iPad has been shipping with a customized iPad-only version of iPhone OS, dubbed v3.2. On September 1, it was announced the iPad would get iOS 4.2 by November 2010. Apple released iOS 4.2.1 to the public on November 22.

Applications

The iPad comes with several applications, including Safari, Mail, Photos, Video, YouTube, iPod, iTunes
ITunes
iTunes is a media player computer program, used for playing, downloading, and organizing digital music and video files on desktop computers. It can also manage contents on iPod, iPhone, iPod Touch and iPad....

, App Store, iBooks
IBooks
iBooks is an e-book application by Apple Inc. It was announced in conjunction with the iPad on January 27, 2010, and was released for the iPhone and iPod Touch in mid-2010, as part of the iOS 4 update. At that time, it was described by Apple as being available only in the United States...

, Maps, Notes, Calendar, Contacts, and Spotlight Search. Several are improved versions of applications developed for the iPhone or Mac
Macintosh
The Macintosh , or Mac, is a series of several lines of personal computers designed, developed, and marketed by Apple Inc. The first Macintosh was introduced by Apple's then-chairman Steve Jobs on January 24, 1984; it was the first commercially successful personal computer to feature a mouse and a...

.

The iPad syncs with iTunes
ITunes
iTunes is a media player computer program, used for playing, downloading, and organizing digital music and video files on desktop computers. It can also manage contents on iPod, iPhone, iPod Touch and iPad....

 on a Mac or Windows PC. Apple ported its iWork
IWork
iWork is an office suite of desktop applications created by Apple for the Mac OS X and iOS operating systems. The first version of iWork, iWork '05, was released in 2005. The suite originally bundled Keynote, a presentation program which had previously been sold as a standalone application, and...

 suite from the Mac to the iPad, and sells pared down versions of Pages
Pages
Pages is a word processor and page layout application developed by Apple. It is part of the iWork productivity suite and runs on the Mac OS X & iOS operating systems. The first version of Pages was announced on January 11, 2005, and was released one month later. The most recent Macintosh version,...

, Numbers
Numbers (software)
Numbers is a spreadsheet application developed by Apple Inc. as part of the iWork productivity suite alongside Keynote and Pages. Numbers 1.0 was announced on August 7, 2007 and thus it is the newest application in the iWork Suite. Numbers runs on Mac OS X v10.4 "Tiger" or newer...

, and Keynote apps in the App Store. Although the iPad is not designed to replace a mobile phone, a user can use a wired headset or the built-in speaker and microphone and place phone calls over Wi-Fi or 3G using a VoIP application. As of June, 2011, there were about 90,000 iPad specific apps on the App Store. The iPad cannot run the Xcode
Xcode
Xcode is a suite of tools, developed by Apple, for developing software for Mac OS X and iOS. Xcode 4.2, the latest major version, is available on the Mac App Store for free for Mac OS X 10.7 , and on the Apple Developer Connection website for free to registered developers Xcode is a suite of tools,...

 development suite since it uses iOS.

In December 2010, Reuters
Reuters
Reuters is a news agency headquartered in New York City. Until 2008 the Reuters news agency formed part of a British independent company, Reuters Group plc, which was also a provider of financial market data...

 reported that iPhone and iPad users have lodged a lawsuit against Apple alleging that some applications were passing their information to third party advertisers without consent.

Digital Rights Management

The iPad employs Digital Rights Management intended to control certain software—including TV shows, movies, and apps—and prevent its transfer or use outside of Apple's platform. Also, the iPad's development model requires anyone creating an app for the iPad to sign a non-disclosure agreement
Non-disclosure agreement
A non-disclosure agreement , also known as a confidentiality agreement , confidential disclosure agreement , proprietary information agreement , or secrecy agreement, is a legal contract between at least two parties that outlines confidential material, knowledge, or information that the parties...

 and pay for a developer subscription. Critics argue Apple's centralized app approval process and control of the platform itself could stifle software innovation. Of particular concern to digital rights
Digital rights
The term digital rights describes the permissions of individuals legitimately to perform actions involving the use of a computer, any electronic device, or a communications network...

 advocates is Apple's ability to remotely disable or delete apps, media, or data on any iPad at any time.

Digital rights
Digital rights
The term digital rights describes the permissions of individuals legitimately to perform actions involving the use of a computer, any electronic device, or a communications network...

 advocates, including the Free Software Foundation
Free Software Foundation
The Free Software Foundation is a non-profit corporation founded by Richard Stallman on 4 October 1985 to support the free software movement, a copyleft-based movement which aims to promote the universal freedom to create, distribute and modify computer software...

, Electronic Frontier Foundation
Electronic Frontier Foundation
The Electronic Frontier Foundation is an international non-profit digital rights advocacy and legal organization based in the United States...

, and computer engineer and activist Brewster Kahle
Brewster Kahle
Brewster Kahle is a computer engineer, internet entrepreneur, activist, and digital librarian.- Biography :Kahle graduated from the Massachusetts Institute of Technology in 1982 with a Bachelor of Science in computer science and engineering, where he was a member of the Chi Phi Fraternity. The...

, have criticized the iPad for its digital rights restrictions. In April 2010, Paul Sweeting, an analyst with GigaOM
GigaOM
GigaOM is a Web 2.0 blog started by Om Malik and published by Giga Omni Media, Inc. in San Francisco, California. According to the company website it has a monthly global audience of 500,000. It is among the top 50 blogs worldwide by Technorati Rank, and is listed on CNet's Blog 100 list...

, was quoted by National Public Radio as saying, "With the iPad, you have the anti-Internet in your hands. [...] It offers [the major media companies] the opportunity to essentially re-create the old business model, wherein they are pushing content to you on their terms rather than you going out and finding content, or a search engine discovering content for you." But Sweeting also thought that the limitations imposed by Apple impart the feeling of a safe neighborhood, saying, "Apple is offering you a gated community where there's a guard at the gate, and there's probably maid service, too." Laura Sydell
Laura Sydell
Laura Sydell reports on Digital Culture for NPR. She was born in New Jersey, and is a former senior technology reporter for Public Radio International's Marketplace, and a regular reporter on for National Public Radio's All Things Considered, Morning Edition, and Weekend Edition...

, the article's author, concludes, "As more consumers have fears about security on the Internet, viruses and malware, they may be happy to opt for Apple's gated community."

Jailbreaking

Like other iOS devices, the iPad can be "jailbroken", allowing applications and programs that are not authorized by Apple to run on the device. Once jailbroken, iPad users are able to download many applications previously unavailable through the App Store via unofficial installers such as Cydia, as well as illegally pirated applications. Apple claims jailbreaking voids the factory warranty on the device in the United States even though jailbreaking is legal.

The iPad, released in April 2010, was first jailbroken in May 2010 with the Spirit
Spirit (iOS jailbreak)
Spirit is an untethered jailbreak for iPhone, iPod Touch, and iPad running iOS 3.1.2 through 3.2. It was developed by Wii homebrew developer comex. Spirit allows users to install software not approved by Apple on their iDevices. It is available for the Windows, Linux, and Mac platforms...

 jailbreak for iOS version 3.1.2. The iPad can be jailbroken on iOS versions 4.3 through 4.3.3 with the web-based tool JailbreakMe
JailbreakMe
JailbreakMe is a series of jailbreaks for Apple's iOS mobile operating system that take advantage of flaws in the Safari browser on the device, providing an immediate one-step jailbreak unlike more common jailbreaks, such as Blackra1n and redsn0w, that require plugging the device into another...

 3.0 (released in July 2011), and on iOS versions including 5.0 and 5.0.1 using redsn0w
Redsn0w
redsn0w is a free iOS jailbreaking tool developed by the iPhone Dev Team, capable of executing jailbreaks on many iOS devices by using low-level boot ROM exploits...

.

Censorship

Apple's App Store, which provides iPhone and iPad applications, imposes censorship of content, which has become an issue for book publishers and magazines seeking to use the platform. The Guardian
The Guardian
The Guardian, formerly known as The Manchester Guardian , is a British national daily newspaper in the Berliner format...

 newspaper described the role of Apple as analogous to that of British magazine distributor WH Smith, which for many years imposed content restrictions.

Due to the exclusion of pornography from the App Store, YouPorn
YouPorn
YouPorn is a free pornographic video sharing website. Since starting in August 2006, it has become the most popular pornographic website. In November 2007, it was reported to be the largest free pornographic website on the Internet...

 and others changed their video format from Flash to H.264 and HTML5 specifically for the iPad. In an e-mail exchange with Ryan Tate from Valleywag
Valleywag
Valleywag was a Gawker Media blog with gossip and news about Silicon Valley personalities. It was initially launched under the direction of editor Nick Douglas in February 2006. After Douglas was fired, the blog was taken over by Owen Thomas. Thomas himself left in May 2009, to be replaced by Ryan...

, Steve Jobs
Steve Jobs
Steven Paul Jobs was an American businessman and inventor widely recognized as a charismatic pioneer of the personal computer revolution. He was co-founder, chairman, and chief executive officer of Apple Inc...

 claimed that the iPad offers "freedom from porn", leading to many upset replies including Adbustings in Berlin by artist Johannes P. Osterhoff and in San Francisco during WWDC10.

Books, news, and magazine content

The iPad has an optional iBooks
IBooks
iBooks is an e-book application by Apple Inc. It was announced in conjunction with the iPad on January 27, 2010, and was released for the iPhone and iPod Touch in mid-2010, as part of the iOS 4 update. At that time, it was described by Apple as being available only in the United States...

 application that can be downloaded from the App Store, which displays books and other ePub
EPUB
EPUB is a free and open e-book standard by the International Digital Publishing Forum...

-format content downloaded from the iBookstore. For the iPad launch on April 3, 2010, the iBookstore is available only in the United States. Several major book publishers including Penguin Books, HarperCollins, Simon & Schuster and Macmillan have committed to publishing books for the iPad. Despite being a direct competitor to both the Amazon Kindle
Amazon Kindle
The Amazon Kindle is an e-book reader developed by Amazon.com subsidiary Lab126 which uses wireless connectivity to enable users to shop for, download, browse, and read e-books, newspapers, magazines, blogs, and other digital media...

 and Barnes & Noble Nook
Barnes & Noble Nook
The Barnes & Noble Nook is a brand of electronic-book reader developed by American book retailer Barnes & Noble, based on the Android platform. The original device was announced in the United States in October 2009, and was released the next month...

, both Amazon.com
Amazon.com
Amazon.com, Inc. is a multinational electronic commerce company headquartered in Seattle, Washington, United States. It is the world's largest online retailer. Amazon has separate websites for the following countries: United States, Canada, United Kingdom, Germany, France, Italy, Spain, Japan, and...

 and Barnes & Noble
Barnes & Noble
Barnes & Noble, Inc. is the largest book retailer in the United States, operating mainly through its Barnes & Noble Booksellers chain of bookstores headquartered at 122 Fifth Avenue in the Flatiron District in Manhattan in New York City. Barnes & Noble also operated the chain of small B. Dalton...

 have made Kindle & Nook apps available for the iPad.

In February 2010, Condé Nast Publications
Condé Nast Publications
Condé Nast, a division of Advance Publications, is a magazine publisher. In the U.S., it produces 18 consumer magazines, including Architectural Digest, Bon Appétit, GQ, The New Yorker, Vanity Fair, and Vogue, as well as four business-to-business publications, 27 websites, and more than 50 apps...

 said it would sell iPad subscriptions for its GQ, Vanity Fair
Vanity Fair (magazine)
Vanity Fair is a magazine of pop culture, fashion, and current affairs published by Condé Nast. The present Vanity Fair has been published since 1983 and there have been editions for four European countries as well as the U.S. edition. This revived the title which had ceased publication in 1935...

 and Wired
Wired (magazine)
Wired is a full-color monthly American magazine and on-line periodical, published since January 1993, that reports on how new and developing technology affects culture, the economy, and politics...

 magazines by June.

In April 2010 The New York Times
The New York Times
The New York Times is an American daily newspaper founded and continuously published in New York City since 1851. The New York Times has won 106 Pulitzer Prizes, the most of any news organization...

 announced that it would begin publishing daily on the iPad. The "Top News" section is available free of charge, and the remainder on payment of a subscription
Subscription business model
The subscription business model is a business model where a customer must pay a subscription price to have access to the product/service. The model was pioneered by magazines and newspapers, but is now used by many businesses and websites....

. Major news organizations, such as The Wall Street Journal
The Wall Street Journal
The Wall Street Journal is an American English-language international daily newspaper. It is published in New York City by Dow Jones & Company, a division of News Corporation, along with the Asian and European editions of the Journal....

, BBC
BBC
The British Broadcasting Corporation is a British public service broadcaster. Its headquarters is at Broadcasting House in the City of Westminster, London. It is the largest broadcaster in the world, with about 23,000 staff...

, and Reuters
Reuters
Reuters is a news agency headquartered in New York City. Until 2008 the Reuters news agency formed part of a British independent company, Reuters Group plc, which was also a provider of financial market data...

 have released iPad applications, to varying degrees of success.

Reception

On May 28, 2010, the iPad was released in Australia, Canada, and Japan, as well as in several larger European countries. Media reaction to the launch was mixed. The media noted the positive response from fans of the device, with thousands of people queued on the first day of sale in a number of these countries.

Reaction to the announcement

Media reaction to the iPad announcement was mixed. Walt Mossberg
Walter Mossberg
Walter S. Mossberg is an American journalist who is the principal technology columnist for The Wall Street Journal.-Early life:...

 wrote, "It's about the software, stupid", meaning hardware features and build are less important to the iPad's success than software and user interface, his first impressions of which were largely positive. Mossberg also called the price "modest" for a device of its capabilities, and praised the ten-hour battery life. Others, including PC Advisor and The Sydney Morning Herald
The Sydney Morning Herald
The Sydney Morning Herald is a daily broadsheet newspaper published by Fairfax Media in Sydney, Australia. Founded in 1831 as the Sydney Herald, the SMH is the oldest continuously published newspaper in Australia. The newspaper is published six days a week. The newspaper's Sunday counterpart, The...

, wrote that the iPad would also compete with proliferating netbook
Netbook
Netbooks are a category of small, lightweight, legacy-free, and inexpensive laptop computers.At their inception in late 2007 as smaller notebooks optimized for low weight and low cost — netbooks omitted certain features , featured smaller screens and keyboards, and offered reduced computing...

s, most of which use Microsoft Windows
Microsoft Windows
Microsoft Windows is a series of operating systems produced by Microsoft.Microsoft introduced an operating environment named Windows on November 20, 1985 as an add-on to MS-DOS in response to the growing interest in graphical user interfaces . Microsoft Windows came to dominate the world's personal...

. The base model's $499 price was lower than pre-release estimates by the tech press, Wall Street analysts, and Apple's competitors, all of whom were expecting a much higher entry price point.

CNET also criticized the iPad for its apparent lack of wireless sync which other portable devices such as Microsoft's Zune
Zune
Zune is a digital media brand owned by Microsoft which includes a line of portable media players, a digital media player software for Windows machines, a music subscription service known as a 'Zune Music Pass', music and video streaming for the Xbox 360 via the Zune Software, music, TV and movie...

 have had for a number of years. The built-in iTunes app is able to download from the Internet as well.

Reviews

Reviews of the iPad have been generally favorable. Walt Mossberg of The Wall Street Journal called it a "pretty close" laptop killer. David Pogue
David Pogue
David Welch Pogue is an American technology writer, technology columnist and commentator. He is a personal technology columnist for the New York Times, an Emmy-winning tech correspondent for CBS News Sunday Morning, weekly tech correspondent for CNBC, and a columnist for Scientific American...

 of The New York Times wrote a "dual" review, one part for technology-minded people, and the other part for non-technology-minded people. In the former section, he notes that a laptop offers more features for a cheaper price than the iPad. In his review for the latter audience, however, he claims that if his readers like the concept of the device and can understand what its intended uses are, then they will enjoy using the device. PC Magazine
PC Magazine
PC Magazine is a computer magazine published by Ziff Davis Publishing Holdings Inc. A print edition was published from 1982 to January 2009...

s Tim Gideon wrote, "you have yourself a winner" that "will undoubtedly be a driving force in shaping the emerging tablet landscape." Michael Arrington of TechCrunch
TechCrunch
TechCrunch is a web publication that offers technology news and analysis, as well as profiling of startup companies, products, and websites. It was founded by Michael Arrington in 2005, and was first published on June 11, 2005....

 said, "the iPad beats even my most optimistic expectations. This is a new category of device. But it also will replace laptops for many people."

PC World
PC World (magazine)
PC World is a global computer magazine published monthly by IDG. It offers advice on various aspects of PCs and related items, the Internet, and other personal-technology products and services...

 criticized the iPad's file sharing
File sharing
File sharing is the practice of distributing or providing access to digitally stored information, such as computer programs, multimedia , documents, or electronic books. It may be implemented through a variety of ways...

 and printing abilities, and Ars Technica
Ars Technica
Ars Technica is a technology news and information website created by Ken Fisher and Jon Stokes in 1998. It publishes news, reviews and guides on issues such as computer hardware and software, science, technology policy, and video games. Ars Technica is known for its features, long articles that go...

 said sharing files with a computer is "one of our least favorite parts of the iPad experience."

The media also praised the quantity of applications, as well as the bookstore and other media applications. In contrast they criticized the iPad for being a closed system and mentioned that the iPad faces competition from Android based tablets. However, the Android tablet OS, known as Honeycomb, is not open source and has fewer apps available for it than for the iPad. The Independent
The Independent
The Independent is a British national morning newspaper published in London by Independent Print Limited, owned by Alexander Lebedev since 2010. It is nicknamed the Indy, while the Sunday edition, The Independent on Sunday, is the Sindy. Launched in 1986, it is one of the youngest UK national daily...

 criticized the iPad for not being as readable in bright light as paper but praised it for being able to store large quantities of books. After its UK release the Telegraph
The Daily Telegraph
The Daily Telegraph is a daily morning broadsheet newspaper distributed throughout the United Kingdom and internationally. The newspaper was founded by Arthur B...

 said the iPad's lack of Adobe Flash
Adobe Flash
Adobe Flash is a multimedia platform used to add animation, video, and interactivity to web pages. Flash is frequently used for advertisements, games and flash animations for broadcast...

 support was "annoying."

Recognition

The iPad was selected by Time Magazine as one of the 50 Best Inventions of the Year 2010, while Popular Science
Popular Science
Popular Science is an American monthly magazine founded in 1872 carrying articles for the general reader on science and technology subjects. Popular Science has won over 58 awards, including the ASME awards for its journalistic excellence in both 2003 and 2004...

 chose it as the top gadget behind the overall "Best of What's New 2010" winner Groasis Waterboxx
Groasis Waterboxx
Groasis Waterboxx is a plastic box designed to help grow trees in dry areas. It is developed by Dutch former flower exporter Pieter Hoff, and won the overall Popular Science Green Tech Best of What’s New Innovation of the year award for 2010, ahead of the Apple iPad, Porsche 918 Spyder and many...

.

Business

While the iPad is mostly used by consumers it also has been taken up by business users. Within 90 days of its release, the iPad managed to penetrate 50% of Fortune 100 companies. Some companies are adopting iPads in their business offices by distributing or making available the iPads to employees. Examples of uses in the workplace include attorneys responding to clients, medical professionals accessing health records during patient exams, and managers approving employee requests.

A survey by Frost & Sullivan
Frost & Sullivan
Frost & Sullivan, Inc. is an American firm which provides market research & analysis, growth strategy consulting and corporate training services. Its headquarters are located in San Antonio, Texas, with offices in over 20 countries across the world....

 shows that iPad usage in office workplaces is linked to the goals of increased employee productivity, reduced paperwork, and increased revenue. The research firm estimates that "The mobile-office application market in North America may reach $6.85 billion in 2015, up from an estimated $1.76 billion [in 2010]."

Education

The iPad has several uses in the classroom, and has been praised as a valuable tool for homeschooling. Soon after the iPad was released, it was reported that 81% of the top book apps were for children. The iPad has also been called a revolutionary tool to help children with autism
Autism
Autism is a disorder of neural development characterized by impaired social interaction and communication, and by restricted and repetitive behavior. These signs all begin before a child is three years old. Autism affects information processing in the brain by altering how nerve cells and their...

 learn how to communicate and socialize more easily.

Many colleges and universities have also used the iPad. Youngstown State University
Youngstown State University
Youngstown State University, founded in 1908, is an urban research university located in Youngstown, Ohio, United States. As of fall 2010, there were 15,194 students and a student-faculty ratio of 19:1. It is recognized as being one of the premier schools in the country, comparable to Ivy League...

 in Youngstown, Ohio
Youngstown, Ohio
Youngstown is a city in the U.S. state of Ohio and the county seat of Mahoning County; it also extends into Trumbull County. The municipality is situated on the Mahoning River, approximately southeast of Cleveland and northwest of Pittsburgh, Pennsylvania...

, began offering three-hour rentals for the iPad for its Fall 2010 semester, in addition to rentals for the Amazon Kindle
Amazon Kindle
The Amazon Kindle is an e-book reader developed by Amazon.com subsidiary Lab126 which uses wireless connectivity to enable users to shop for, download, browse, and read e-books, newspapers, magazines, blogs, and other digital media...

, laptop computers
Laptop
A laptop, also called a notebook, is a personal computer for mobile use. A laptop integrates most of the typical components of a desktop computer, including a display, a keyboard, a pointing device and speakers into a single unit...

, and Flip cameras
Flip Video
The Flip Video camera is a tapeless camcorder for digital video created by Pure Digital Technologies, a company bought by Cisco Systems in March 2009...

.

Healthcare

In the healthcare field, iPads and iPhones have been used to help hospitals manage their supply chain
Supply chain management
Supply chain management is the management of a network of interconnected businesses involved in the ultimate provision of product and service packages required by end customers...

. For example, Novation, a healthcare contracting services company, developed VHA PriceLynx (based on the mobile application platform of business intelligence software vendor MicroStrategy), a business intelligence
Business intelligence
Business intelligence mainly refers to computer-based techniques used in identifying, extracting, and analyzing business data, such as sales revenue by products and/or departments, or by associated costs and incomes....

 app to help health care organizations manage its purchasing procedures more efficiently and save money for hospitals. Guillermo Ramas of Novation states, "Doctors won't walk around a hospital with a laptop. With an iPad it's perfect to walk around the hospital with as long as they have the information they need."

Sports

During the 2010 Major League Baseball
Major League Baseball
Major League Baseball is the highest level of professional baseball in the United States and Canada, consisting of teams that play in the National League and the American League...

 free agent season, the agent for the player Carl Crawford
Carl Crawford
Carl Demonte Crawford is an American professional baseball outfielder who plays for the Boston Red Sox of Major League Baseball. He bats and throws left-handed...

 was sending iPads to prospective teams interested in Mr. Crawford. These iPads were pre-loaded with video clips highlighting his player, and how it would benefit their team to have him.

Fans attending Super Bowl XLV
Super Bowl XLV
Super Bowl XLV was an American football game between the American Football Conference champion Pittsburgh Steelers and the National Football Conference champion Green Bay Packers to decide the National Football League champion for the 2010 season. The game was held at Cowboys Stadium in...

, the first Super Bowl
Super Bowl
The Super Bowl is the championship game of the National Football League , the highest level of professional American football in the United States, culminating a season that begins in the late summer of the previous calendar year. The Super Bowl uses Roman numerals to identify each game, rather...

 since the iPad was released, could use an official NFL
National Football League
The National Football League is the highest level of professional American football in the United States, and is considered the top professional American football league in the world. It was formed by eleven teams in 1920 as the American Professional Football Association, with the league changing...

 app to navigate Cowboys Stadium. In 2011
2011 NFL season
The 2011 NFL season, the 92nd regular season of the National Football League, began on Thursday, September 8, 2011 with the Super Bowl XLV champion Green Bay Packers defeating the New Orleans Saints 42–34 at Lambeau Field and will end with Super Bowl XLVI, the league's championship game, on...

, the Tampa Bay Buccaneers
Tampa Bay Buccaneers
The Tampa Bay Buccaneers are a professional American football franchise based in Tampa, Florida, U.S. They are currently members of the Southern Division of the National Football Conference in the National Football League – they are the only team in the division not to come from the old NFC West...

 became the first NFL
National Football League
The National Football League is the highest level of professional American football in the United States, and is considered the top professional American football league in the world. It was formed by eleven teams in 1920 as the American Professional Football Association, with the league changing...

 club to discontinue the use of paper copies of playbooks, and instead distributed all players their playbook and videos in electronic format via an iPad 2
IPad 2
The iPad 2 is the second and current generation of the iPad, a tablet computer designed, developed and marketed by Apple. It serves primarily as a platform for audio-visual media including books, periodicals, movies, music, games, presentations and web content, and is available in black or white...

.

In sports, new technology proposes the viewer to choose its alternative angles while watching the game.

Music

The iPad is able to support many music creation applications in addition to the iTunes music playback software. These include sound samplers, guitar and voice effects processors, sequencers for synthesized sounds and sampled loops, virtual synthesizers and drum machines, theremin-style and other touch responsive instruments, drum pads and many more. Gorillaz
Gorillaz
Gorillaz is an English musical project created in 1998 by Damon Albarn and Jamie Hewlett. This project consists of Gorillaz music itself and an extensive fictional universe depicting a "virtual band" of cartoon characters...

's 2010 album, The Fall
The Fall (Gorillaz album)
-Additional personnel:* Guitar on track 3 by Mick Jones* Additional keyboards on track 6 by Jesse Hackett* Bass on track 12 by Paul Simonon* Qanun on track 12 by James R Grippo* Vocals, guitar and additional songwriting on track 13 by Bobby Womack...

, was created almost exclusively using the iPad by Damon Albarn
Damon Albarn
Damon Albarn is an English singer-songwriter and record producer who has been involved in many high profile projects, coming to prominence as the frontman and primary songwriter of Britpop band Blur...

 while on tour with the band.

Second Screen

The iPad has introduced a new way watching television. The second screen
Second screen
Second Screen is a new expression which describes, in the broadcasting industry, the use of a smartphone, tablet computer or computer that audiences use while watching television.- Multi-tasking :...

 expression is a consequence of the media multitasking which is exploding.

Travel

Since March 2011, the US Federal Aviation Administration
Federal Aviation Administration
The Federal Aviation Administration is the national aviation authority of the United States. An agency of the United States Department of Transportation, it has authority to regulate and oversee all aspects of civil aviation in the U.S...

 has approved the iPad for in-cockpit use to cut down on the paper consumption in several airlines.
In 2011, Alaska Airlines
Alaska Airlines
Alaska Airlines is an airline based in the Seattle suburb of SeaTac, Washington in the United States. The airline originated in 1932 as McGee Airways. After many mergers with and acquisitions of other airlines, including Star Air Service, it became known as Alaska Airlines in 1944...

 became the first airline to replace pilots' paper manuals with iPads, weighing 0.68 kg compared to 11 kg for the printed flight manuals. It hopes to have fewer back and muscle injuries. More than a dozen airlines have followed suit, including United, which has distributed 11,000 iPads to cockpits. Also, many airlines now offer their inflight magazine as a downloadable application for the iPad.

See also

  • Pen computing
    Pen computing
    Pen computing refers to a computer user-interface using a pen and tablet, rather than devices such as a keyboard, joysticks or a mouse....

     for a broad history of gesture-based user interfaces
  • Comparison of:
    • iOS devices
    • E-book readers
    • Portable media players
      Comparison of portable media players
      The following comparison of portable media players compares general and technical information for notable digital playback devices.- General :- Technical specifications :- Syncing and transfer :- Wifi Connectivity :- Audio formats :...

    • Tablet computers
    • ARM tablets
      Comparison of ARM tablets
      This is a comparison of tablet computers which processors are ARM-based.-Tablets:-Systems on chips:This table compares the system-on-a-chip used in the above tablets.-See also:*ARM Holdings*Comparison of tablet computers...


External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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