IPad
The iPad is a brand of iOS and iPadOS-based tablet computers developed by Apple Inc. It is the successor of the Newton MessagePad and an unreleased prototype of the PowerBook Duo-based tablet computer. Apple conceived of the iPad before the related iPhone, although the latter was developed and released first. Speculations of the original iPad began in 2002, and dealt with its development, operating system, and release, prior to its introduction on January 20, 2010. It consists of four lineups, the original iPad lineup and three flagships, iPad Mini, iPad Air, and iPad Pro.

It initially used the iPhone's iOS operating system, which was later forked as iPadOS with better support for the hardware and a user interface customized for the larger screen. Many older devices are susceptible to "jailbreaking", a privilege escalation exploit which permits full root access within the operating system and circumvention of the App Store, which is subject to application and content approvals. The original iPad model was well-received for its software, and was recognized as one of the most influential inventions of 2010.

It has a fairly stable market share with a significant drop in the in the third quarter of 2012, and it has started to recover but not as abundant as before. It is used in business, education, healthcare, technology, and other personal usages. It come in two variants, the Wi-Fi only and Wi-Fi with cellular support. Its accessories included the Apple Pencil, Smart Case, Smart Keyboard, Smart Keyboard Folio, Magic Keyboard, and several adapters.

History

Background 

Apple co-founder and CEO Steve Jobs said in a 1983 speech: "What we want to do is we want to put an incredibly great computer in a book that you can carry around with you and learn how to use in 20 minutes ... and we really want to do it with a radio link in it so you don't have to hook up to anything and you're in communication with all of these larger databases and other computers".

Apple's first tablet computer and the iPad's predecessor was the Newton MessagePad, which was introduced in 1993. Apple also designed an alternative prototype of the PowerBook Duo-based tablet computer but decided not to sell it to avoid hurting MessagePad sales. The Newton MessagePad was developed under the leadership of John Sculley, who replaced Jobs as Apple's CEO after he was ousted in 1985. The MessagePad was a technological failure, and its handwriting recognition often resulted in an indecipherable jumble of words. When Jobs returned to Apple in 1997, he discontinued the MessagePad.

The development of an iPad tablet computer was first speculated in 2002 when Apple's associated supplier Quanta leaked orders from Apple on wireless displays. Less than two weeks later after US Design Patent No. D504,889 leaked a concept design of the iPad in May 2005, the blogger Rob Bushway speculated that it would use a stripped-down version of OS X. Speculation then turned to Intel, who was visited by Apple to sought a chip to use on one of their potential products, speculatively the iPad. In September 2009, the Taiwan Economic News said that the iPad would be announced sometimes in February 2010 and cited "industry sources," but it was in fact, announced in January 2010.

The iPad's conception predated that of the iPhone, although the iPhone was chronologically developed and released before the iPad. In 1991, Apple chief design officer Jonathan Ive devised an industrial design of a stylus-based tablet, the Macintosh Folio, which laid the foundation for a larger tablet prototype project codenamed K48 (the iPad) that Apple began in 2004. After seeking to develop the tablet first, Ive come to an agreement with Jobs that the iPhone was more important and reversed the order.

iPad 

The first generation of iPad was announced on January 20, 2010, with pre-order began on March 12. The Wi-Fi version was released in the United States on April 3, while the Wi-Fi- 3G version was released on April 30  Apple released the first generation of iPad internationally on May 28, July 23, and September 17. It used an single-GHz Apple A4 chip, with 256 MB of RAM, and a PowerVR SGX535 GPU. Its four switches included a home button (which directs the user to its homepage), and the wake/sleep and volume/down switches. Its multitouch-based display had a resolution of 1,024 by 768 pixels.

The second generation of iPad was announced on March 2, 2011 and released on March 11. It is 33% thinner and 15% lighter than its predecessor, and it used a dual-core Apple A5 chip, which comprised a 2x faster CPU and a 9x faster GPU. It added several front-and-back cameras that support Apple's FaceTime video-telephony service. Apple reduced the size of the iPad by eliminating the stamped sheet metal frame from its display and integrated a thinner glass technology for the screen overlay. In addition to a slight contract of space between the display and battery.

The third generation of iPad was announced on March 7, 2012 and released on March 16, 2012. It featured a dual-core Apple A5X chip embedded with quad-core graphics. Its Retina Display had a resolution of 2,048 by 1,536 pixels, 50% more pixel densities than standard displays. 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.

The fourth generation of iPad was announced on October 23, 2012 and released on November 2. It had an A6X chip, an added 1020P FaceTime HD camera, improved LTE and WiFi connectivity, and it added supports for Touch ID, a fingerprint recognition biometric authentication. It featured a 5-megapixel, rear-facing camera capable of recording 1080p-quality  videos; and a 720p HD front-facing FaceTime HD camera. Its display had a resolution of 2,048 by 1,536 pixels.

The fifth generation of iPad was announced on March 21, 2017 and released on March 24. It used an Apple A9 chip with an accompanying M9 motion coprocessor, and its front-and-back cameras can capture low-light and HD-quality shots. Despite its use of the Apple A9 and M9 processors debuted with the iPhone 6s in 2015, it lacked support of the default always-on "Hey Siri" voice, a feature advertised as being made possible by low-power processing in the then-new chips.

The sixth generation of iPad was announced on released on March 27, 2018. It used a dual-core Apple A10 Fusion chip ,and it featured a front-rear camera, a 1080p and 30fps rear mounted 8-megapixel iSight camera, and a 720p-quality Facetime HD camera. It also had faster FaceTime HD, LTE connectivity, Touch ID, and multitask functionalities.

The seventh generation of iPad was announced on September 10, 2019 and released on September 25. It uses a 64-bit Apple A10 Fusion chip, which is 2x faster than the then-bestselling Windows PC, and its Retina Display had a resolution of 3.5 million pixels  It added support for the accessory Smart Keyboard.

The eighth generation of iPad was announced on September 15, 2020 and released on September 18. It used an Apple A12 Bionic chip, which comprised a 40% faster 6-core CPU and a 2x faster 4-core CPU than its predecessor. The Apple A12 also included an embedded Neural Engine, and is capable of processing 5 trillion operations per second. Its Retina Display had a resolution of 1668 by 2388 pixels.

The ninth generation of iPad was announced and released on September 14, 2021. It used an Apple A13 Bionic chip, which comprised a 20% faster CPU, GPU, and an embedded, artificial intelligence-immersed Neural Engine. Its 12-megapixel front camera add support for Apple's "Center Stage Mode" technology, which pinpoints the positions of the users and automatically tracks the camera view accordingly to perspectivally centralize them. Its Retina Display featured True Tone technology, which automatically adjust the screen color temperature accordingly to the ambident lightning rates.

iPad Mini 

The first generation of the flagship, smaller iPad Mini was announced on October 23, 2012 and released on November 2. It used a dual-core Apple A5 chip, and resembled the hardware of the second generation of iPad. In addition to a FaceTime HD camera, a 5-megapixel iSight camera, an ultrafast wireless LTE range, and a 802.11a/b/g/n standard Wifi connectivity. It is aimed at the at the emerging sector of mini tablets such as Kindle Fire and Nexus 7.

The second generation of iPad Mini was announced on October 22, 2013 and released on November 12, 2013, resembling the hardware of the first generation of iPad Air. (below) 

The third generation of iPad Mini was announced on October 16, 2014 and released on October 22. It used an Apple A7 chip with an embedded M7 motion coprocessor, and its 7.9-inch Retina screen display had a resolution of 2048 by 1536-pixel. It included a 1080p HD camera, a FaceTime HD camera, and a 5-megapixel iSight camera.

The fourth generation of iPad Mini was announced and released on September 9, 2015. It used a dual-core Apple A8 chip with the embedded Apple M8 motion coprocessor. Its headphone jack was re-positioned with the removal of a mute switch.

The fifth generation of iPad Mini was announced and released on March 18, 2019. It used an Apple A12 Bionic chip, with a 3x faster CPU and a 9x faster GPU than its predecessor. It featured a Truetone-based Retina screen display with 25% wider Color and had higher pixel density levels.

The sixth generation of iPad Mini was announced and released on September 24, 2021. It used an Apple A15 Bionic chip, with a 40% faster 6-core CPU, an 80% faster 6-core CPU, an 80% faster 5-core CPU. Its artificial intelligence-immersed 16-core Neural Engine and AI accelerators within the CPU delivered a 2x boost of AI performance. Its 12MP Ultra Wide front camera featured Apple's "Center Stage Mode" technology, while its 12 MP back camera had higher apertures, True Tone flash, and Smart HDR automatic shadow and highlight recovery. It included a USB-C port that is capable of transferring up to 5Gbps of data, improved landscape stereo speakers, and a brighter Liquid Retina Display.

iPad Air 
 
The first generation of another flagship of premium lightweight tablet computers, the iPad Air, was announced on October 22, 2013 and released on November 1. It used an Apple A7 chip with an embedded Apple M7 Motion coprocessor; the chip included over a billion transistors and comprised a 2x faster CPU and GPU. It debuted the 80211n-based MINO technology used in its Wi-Fi connectivity, and it had an extended range of LTE telecommunication. It also came with a Retina Display.

The second generation of iPad Air was announced on October 16, 2014 and released on October 22. It used an Apple A8X chip with a 2.5x faster CPU. Its 8MP iSight Camera had 1.12-micron pixels anda f/2.4 aperture, while its FaceTime Camera had f/2.2 apertures and 81% light capacity. It debuted Face ID, a facial recognition system biometric authentication, and its display had a revised 56% lower reflective rate. It also had an extended range of LTE telecommunication service.

The third generation of iPad Air was announced on March 18, 2019 and released on March 25. It used an Apple A12 Bionic with an embedded Neutral Engine and 4-core CPU and GPU. Its 866 Mbps WiFi connectivity are LTE-based, and it is equipped with a 1080p HD video camera.

The fourth generation of iPad Air was announced on September 15, 2020 and released on October 23. It used an Apple A14 Bionic chip, which comprised 11.9 billion transistors, a 40% faster 60-core CPU, a 30% faster GPU, and an embedded Neural Engine that can process 11 trillion operations per second. Its 10.9-inch Liquid Retina Screen display have a resolution of 2360 by 1640 pixels (3.8 million pixels). Its front 7-megapixel Facetime Camera is of 1080p and 60 fps, while its 12-megapixel webcam featured 8 aperture, 4k, 60fps, and video stabilization.  Apple re-integrated Touch ID and replaced Face ID due to the Face ID's inaccurate recognition to mask-wearing users in the Covid-19 pandemic.

iPad Pro 

The first generation of iPad Pro, a high-end and professional flagship, was announced on September 9, 2015 and released on November 11, (12.9-inch version) and March 31 (9.7-inch).It used an Apple A9X chip, with a 2x higher memory bandwidth and a 1.8x faster CPU than its predecessor. It audio system consisted of 4 audio ports and its volume were more 3x more efficient than the second generation of iPad Air, and its 12-inch screen display had a resolution of 2732 by 2043 pixels.

The second generation of iPad Pro was announced on June 5, 2017 and was released on June 13. It used an Apple A10X chip, with a 6-core CPU and a 12-core GPU, and it can process 120hz HDR quality medias, 2x higher quality than its predecessor. Its ultra-low reflective Retina Display featured a 50% optimized True Tone technology (which automatically adjust the screen accordingly to its ambient color and brightness rates), Wide Color Integration, and up to 500 nit brightness rates. It also had a 12-megapixel rear-facing camera and a 7-megapixel front-facing camera.

The third generation of iPad Pro was announced on October 30, 2018 and released on November 7, and it is the first iPad to support 1TB of storage. It used a 7 nm Apple A12X Bionic chip, which comprised 11 billion transistors, an 8-core GPU CPU, a 7-core GPU with 4 efficient core, and an embedded Neural Engine capable of processing 5 trillion operations per second. Apple replaced the Touch ID fingerprint recognition biometric authentication with its facial counterpart, Face ID.

The fourth generation of iPad Pro was announced and released on March 18, 2020. It used an Apple A12Z chip, with an 8-core CPU and a thermal architecture. Its Gibt-class Wi-Fi connectivity is 60% faster than that of its predecessor. Its ultra-wide camera doubled its clarity, while its 12-megapixel camera is capable of capturing 4k quality recording. These cameras allow it to capture medias with wider visibility, and its audio system automatically detects and attracts any orientation nearby.

The fifth generation of iPad Pro was April 20, 2021 and released on May 21. It used an innovative desktop-class Apple M1 chip, which comprised a 40% faster 8-core CPU, a 4x faster 8-core GPU, and a 4x higher bandwidth. It featured a ƒ/1.8 aperture 12-megapixel wide-angle pro camera (captures high quality shots) and a ƒ/2.4 aperture 2-megapixel ultrawide camera (captures enhanced Augmented Reality interactive experience). It debuted Apple's "Center Stage mode" technology, which pinpoints the positions of the users and automatically tracks the camera view accordingly to perspectivally centralize them. The 12.0-inch version had a mini LED-based Liquid Retina XDR display, compared to the 11-inch model's lesser IPS LCD-based Liquid Retina display.

Cellular connectivity 
The iPads come in two variants, Wi-Fi only and Wi-Fi with cellular support. Unlike its counterpart, the cellular variants did not support circuit-switched voice calls and text messages, but rather only plain data connectivity; it also had an additional micro-SIM circuit slot attached on the side. The 3G-based iPads is compatible with any GSM carrier, unlike the iPhone which is usually sold locked' to specific carriers. For the first generation of iPad, cellular access from T-Mobile was limited to slower EDGE cellular speeds because T-Mobile's network at the time used different frequencies.

The second generation of iPad introduced a third tier of CDMA support from Verizon, which is available separately from the AT&T-based version. The fifth generation of iPad used a nano-SIM circuit slot, white its predecessors used Micro-SIM. The iPads used two frequency bands; both support the same quad-band GSM and quad-band UMTS frequencies. One supports LTE bands 4 and 17 (principally intended for use on the U.S. AT&T network), and the other supports LTE bands 1, 3, 5, 13, 25 and CDMA EV-DO Rev. A and Rev. B.

Apple extended the range of cellular compatibilities worldwide with the release of the fifth generation of iPad and the second generation of iPad Mini, worldwide and all major carriers across North America. The iPad Air and iPad Mini come in two cellular sub-variants, all of which featured nano-SIMs, quad-band GSM, penta-band UMTS, and dual-band CDMA EV-DO Rev. A and B. One supports LTE bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25 and 26, and the other supports LTE bands 1, 2, 3, 5, 7, 8, 18, 19, 20 and TD-LTE bands 38, 39 and 40.

Accessories 

Apple offers many iPad accessories, ranging from keyboards, styluses, cases, to adapters; a 10 W power adapter is bundled with the device. In addition to a camera connection kit which consists of two adapters for the iPad's dock connector, one of USB Type A and one of SD card reader; these adapters can transfer photographs and videos and connect USB audio card and MIDI keyboard.

Apple's list of accessories included the Apple Pencil ― a wireless stylus pen, Smart Cover ― a magnetic screen protector that align to the face of an iPad with three folds that is convertible into a stand, Smart Case ― a fine case combining the functions of a Smart Cover and a back-protection case, Smart Keyboard Folio ― an externally-paired keyboard and a combination of a Smart Case and its predecessor, a Smart Keyboard, Magic Keyboard, ― an externally-paired keyboard similar to the formers but with integrated trackpads which the Smart Keyboard Folio and Smart Keyboard lack.

Software 

Since its introduction in 2010, the iPad runs on the iPhone's iOS mobile operating system, but it was later replaced with an optimized derivation, iPadOS, in September 2019. It shares the former's development environment and many of its applications and features. The iPad is compatible with nearly every iPhone application through iOS, and developers can optimize these applications to take full advantage of the iPad's software. They used iOS SDK, a software development kit.

The iOS user interface is based upon direct manipulation, using multi-touch gestures such as swipe, tap, pinch, and reverse pinch. Interface control elements include sliders, switches, and buttons. Internal accelerometers are used by some applications to respond to shaking the device (one common result is the undo command) or rotating it in three dimensions (one common result is switching between portrait and landscape mode). Various accessibility described in § Accessibility functions enable users with vision and hearing disabilities to properly use iOS.

iOS devices boot to the homescreen, the primary navigation and information "hub" on iOS devices, analogous to the desktop found on personal computers. iOS homescreens are typically made up of app icons and widgets; app icons launch the associated app, whereas widgets display live, auto-updating content, such as a weather forecast, the user's email inbox, or a news ticker directly on the homescreen.
Along the top of the screen is a status bar, showing information about the device and its connectivity. The status bar itself contains two elements, the Control Center and the Notification Center.

iOS' Control Center can be "pulled" down from the top right of the notch, giving access to various toggles to manage the device more quickly without having to open the Settings. It is possible to manage brightness, volume, wireless connections, music player, etc. A homescreen may be made up of several pages, between which the user can swipe back and forth, one of the ways to do this is to hold down on the "dots" shown on each page and swipe left or right. To the right of the last page, the App Library lists and categorizes apps installed on the device. Apps within each category are arranged based on the frequency of their usage. In addition to a category for suggested apps, a "recent" category lists apps recently installed alongside App Clips recently accessed. Users can search for the app they want or browse them in alphabetical order.

iOS' multitasking API included Background audio – application continues to run in the background as long as it is playing audio or video content, voice over IP – application is suspended when a phone call is not in progress, Push notification, Local notifications – application schedules local notifications to be delivered at a predetermined time, Task completion – application asks the system for extra time to complete a given task, Fast app switching – application does not execute any code and may be removed from memory at any time, Newsstand – applications can download content in the background to be ready for the uses, External Accessory – application communicates with an external accessory and shares data at regular intervals, Bluetooth Accessory – application communicates with a Bluetooth accessory and shares data at regular intervals, and Background application update.

iPadOS features a multitasking system developed with more capabilities compared to iOS, with features like Slide Over and Split View that make it possible to use multiple different applications simultaneously. Double-clicking the Home Button or swiping up from the bottom of the screen and pausing will display all currently active spaces. Each space can feature a single app, or a Split View featuring two apps. The user can also swipe left or right on the Home Indicator to go between spaces at any time, or swipe left/right with four fingers.

In iPadOS, while using an app, swiping up slightly from the bottom edge of the screen will summon the Dock, where apps stored within can be dragged to different areas of the current space to be opened in either Split View or Slide Over. Dragging an app to the left or right edge of the screen will create a Split View, which will allow both apps to be used side by side. The size of the two apps in Split View can be adjusted by dragging a pill-shaped icon in the center of the vertical divider and dragging the divider all the way to one side of the screen closes the respective app. If the user drags an app from the dock over the current app, it will create a floating window called Slide Over which can be dragged to either the left or right side of the screen. A Slide Over window can be hidden by swiping it off the right side of the screen, and swiping left from the right edge of the screen will restore it. Slide Over apps can also be cycled between by swiping left or right on the Home Indicator in the Slide Over window and pulling up on it will open an app switcher for Slide Over windows. A pill-shaped icon at the top of apps in Split View or Slide Over allows them to be switched in an out of Split View and Slide Over.

Model comparison

Restrictions

Digital rights management 

The iPad does not employ digital rights management (DRM), but the OS prevents users from copying or transferring certain content outside of Apple's platform without authorization, such as TV shows, movies, and apps. Also, the iPad's development model requires anyone creating an app for the iPad to sign a non-disclosure agreement 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 advocates is Apple's ability to remotely disable or delete apps on any iPad at any time.

Digital rights advocates, including the Free Software Foundation, Electronic Frontier Foundation, and computer engineer and activist Brewster Kahle, have criticized the iPad for its digital rights restrictions. In April 2010, Paul Sweeting, an analyst with GigaOM, was quoted by NPR 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, 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." The Russian government has switched from iPads to Android devices over security concerns.

Jailbreaking 

Like other iOS devices, the iPad can be "jailbroken", depending on which version of iOS or iPadOS it is running, thus allowing applications and programs that are not authorized by Apple to run on the device. Once it is jailbroken, 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 "can" void 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 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 3.0 (released in July 2011), and on iOS versions including 5.0 and 5.0.1 using redsn0w Absinthe 2.0 was released on May 25, 2012 as the first jailbreak method for all iOS 5.1.1 devices except the 32 nm version of the iPad 2.

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 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 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, Steve Jobs 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.

Original reception 
Media reaction to the original iPad 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.

The iPad was quickly successful and sold in large numbers after its 2010 launch. Analysts have noted that while Apple's previous iPod and iPhone launches took some time till taking off, the iPad was commercially popular from the beginning and faced little market competition during its first year.

Reaction to the announcement 
Media reaction to the announcement of the original iPad was mixed. Walter Mossberg 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, wrote that the iPad would also compete with proliferating netbooks, most of which use Microsoft Windows. 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 have had for a number of years. The built-in iTunes app is able to download from the Internet as well.

Critical response 
Reviews of the original iPad have been generally favorable. Walt Mossberg then, of The Wall Street Journal called it a "pretty close" laptop killer. David Pogue 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'''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 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 criticized the iPad's file sharing and printing abilities, and Ars Technica 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, that outsold iPads in 2013, surpassing iPads in the second quarter of 2013, and have overtaken iPad's installed base, and has lost majority of web browsing to Android, by StatCounter estimates, in South America, Africa, most of Asia many large countries there and in Eastern Europe. The Independent 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 Daily Telegraph said the iPad's lack of Adobe Flash support was "annoying."

 Recognition 
The original iPad was selected by Time magazine as one of the 50 Best Inventions of the Year 2010, while Popular Science chose it as the top gadget behind the overall "Best of What's New 2010" winner Groasis Waterboxx.

 Usage 
 Market share 

The iPad had a relatively stable global market share. It received a significant drop in the third quarter of 2012 but gradually recovered, although not as abundant as before. As of the third quarter of 2021, it had a market share of 34.6%.

 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 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 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]."

Since March 2011, the US Federal Aviation Administration (FAA) has approved the iPad for in-cockpit use to cut down on the paper consumption in several airlines. In 2011, Alaska Airlines became the first airline to replace pilots' paper manuals with iPads, weighing  compared to  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  iPads to cockpits. Also, many airlines now offer their inflight magazine as a downloadable application for the iPad.

 Education and healthcare 
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 learn how to communicate and socialize more easily.

In the healthcare field, iPads and iPhones have been used to help hospitals manage their supply chain. 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 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."

In 2013, Gianna Chien (aged 14) presented to more than 8,000 doctors at the Heart Rhythm Society meeting that the Apple iPad 2 can, in some cases, interfere with life-saving heart devices (pacemakers) because of the magnets inside. The iPad User Guide advised pacemaker users to keep iPads at least  away from the pacemaker. A study in 2014 found that the iPad 2 could cause electromagnetic interference (EMI) in implantable cardioverter defibrillators.

 Consumer usage 
In the United States, fans attending Super Bowl XLV, the first Super Bowl since the iPad was released, could use an official National Football League (NFL) app to navigate Cowboys Stadium. In 2011, the Tampa Bay Buccaneers became the first NFL 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.

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's 2010 album, The Fall'', was created almost exclusively using the iPad by Damon Albarn while on tour with the band. The music video for Luna Sea's 2012 single, "Rouge", was filmed entirely on an iPad.

The iPad has greatly increased social television use. Viewers can use the iPad as a convenient second networked computer (or "second screen") for communicating with other viewers or with the television provider. Viewers can use a web browser or specialized applications to discuss a program with other viewers, while it is being broadcast, while content providers may use the second screen to interact with viewers in real time. For example, the latter facility allows content providers to conduct real-time polls or to collect comments about the program, that can be displayed as text on the main television screen. Viewer interaction via a second screen is becoming increasingly popular.

Timeline

See also 
 List of Apple Inc. media events
 Comparison of e-readers
 Comparison of tablet computers
 Microsoft Surface
 Pen computing

Notes

References

External links 
 
 

IPad
Apple Inc. hardware
Articles which contain graphical timelines
Computer-related introductions in 2010
Foxconn
IOS
Products introduced in 2010
Tablet computers
Touchscreen portable media players