?isdatigita la vortaro de la hispana lingvo per pli ol 5 mil novaj vortoj

Sabato, la 18-a de oktobro 2014

La 23-a eldono de la Vortaro de la hispana lingvo (Diccionario de la lengua española, Drae), publikigita de la Re?a Akademio Hispana, estis prezentata pasint-?a?de kaj jam a?eteblas en la librovendejoj. ?i enhavas pli ol 19 mil amerikana?ojn kaj vortojn de la ?iutaga uzo.

Entute estas pli ol la duoblo ol en la unua vortaro de 1780. Fakto, kiu pravigas, ke la lingvo, kundividita de preska? 500 milionoj da personoj, estas vivanta lingvo.

La nova eldono arigas preska? 5.000 vortojn pli ol la anta?a eldono de 2001. Multaj el la vortoj jam aperis anta?e sur la reta versio de la vortaro. Novaj vortoj kiel tuitear (pepi), tanguear (danci tangon), hipervínculo (ligilo, rilate al interreto) kaj pilates (Pilato, ekzerco), inter aliaj, nun aldoni?is al la normiga vortaro. El la 195.439 vortoj de la verko, proksimume 19.000 estas kutimaj de Latin-Ameriko.

Kiel jam okazis pri la Ortografía (Ortografio) kaj la Gramática (Gramatiko) publikigitaj anta? nelonge, la vortaro estas tuthispana. La Re?a Akademio Hispana verkis ?in kune kun la aliaj 22 akademioj de lingvoj, plejparte amerikaj.

En tiu ?i eldono pligrandi?is la nombro da vortoj devenaj el aliaj lingvoj (extranjerismos), kelkaj e? neadaptitaj, kiel hacker (programar-rompisto) kaj aliaj adaptitaj, kiel eslogan (moto).

Kelkaj nombroj el la nova eldono:

Apple unveils “Boot Camp” allowing Windows to work on Macs

Wednesday, April 5, 2006 

Apple unveiled today a new program called “Boot Camp” which will allow Macintosh users to switch between running Mac OS X and Windows on start-up of their Intel-based Macintosh computer. Shares of the company rose roughly 7% in response to the news.

After Apple switched to Intel processors, enthusiasts and hackers have been trying to install Windows XP on a Mac. Because Macs boot using a faster and more modern system that Windows does not support, booting Windows was a very complicated task.

Mac enthusiasts reportedly achieved this task in mid-March when the website OnMac.net hosted a contest [1]. The winning solution found involved a lengthy process that took both operating systems off and put them both back on. In addition, individual files had to be downloaded and installed, and there were no drivers for many things, most notably games.

Apple fixed both of these problems, with all major drivers included, and the process reportedly now takes less then an hour as compared to 3-9 hours.

The program is available for download, in beta form, from the Apple website. [2] It will be included in the newest Mac OS, called Leopard, once that operating system is released.

Report urges Kenya to ban plastic bags

Wednesday, March 9, 2005 

They are cheap, useful, and very plentiful, and that is exactly the problem, according to researchers. A report issued on Feb. 23 by a cadre of environment and economics researchers suggested that Kenya should ban the common plastic bag that one gets at the checkout counter of grocery stores, and place a levy on other plastic bags, all to combat the country’s environmental problems stemming from the bags’ popularity.

The new report was a result of work by Kenyan government, the United Nations Environment Programme (UNEP), and the Kenya Institute for Public Policy Research and Analysis. It evaluated the state of waste management in the country with particular attention to plastic bag pollution, and recommended that bags less than 30 microns in thickness be banned, a levy be placed on suppliers of thicker bags, and a number of programs be developed to encourage people in the country to not litter, but to recycle and use alternative or reusable bags for their shopping needs instead.

On one hand, the bags are often better than the alternatives, and are getting better. The Society of the Plastics Industry (SPI) in the United States quotes the University of Arizona Garbage Project’s report that plastics are getting more compact and take up less space in landfills. Plastic bags compare favorably with paper bags which require more energy to produce, generate more waste and burn less cleanly, according to the SPI.

But on the other hand, the bags have gotten so thin as to be barely reusable and recyclable: grocers will frequently double-bag heavy produce, and the bag weighs so little that a great number of bags have to be collected to create an effectively recycled mass of plastic. The light-weight bags are easily picked up by wind, and end up escaping open trash bins and refuse heaps. By littering the landscape, plastic bags become a choking hazard for cattle; in the sea they hurt marine mammals. In Bangladesh, plastic bags were banned after they were blamed for blocking storm drains and causing flooding. Even if they do enter the landfill successfully, the bags take up to 1000 years to bio-degrade.

Plastic bags in Kenya are an especially acute problem. According to the report, waste management in the country isn’t very effective, due partially to a lack of municipal trash pickup in squatter settlements and satellite towns outside the cities’ boundaries. Less than 25% of the solid waste generated daily gets processed by a combination of public and private efforts.

Sometimes plastic bag litter can have even further consequences. According to 2004 Nobel Peace Prize winner, Kenyan Professor Wangari Mathaai, discarded bags fill up with rainwater and become perfect breeding grounds for malaria-bearing mosquitoes. Malaria is Africa’s most deadly infectious disease in children, and over 50% of all hospital visits in some areas are malaria-related. Social costs of plastic litter add up as well: countries lacking comprehensive waste management often sprout underground economies of ragpickers — typically children who wander refuse heaps and collect potentially recyclable materials for sale to shady businessmen operating from official dump sites. The ragpickers in developing countries struggle with plastic bags, preferring thicker materials that require fewer items to be picked up for the same weight.

The problem with bags is that they are victims of their own success: they are so very cheap to manufacture that, at a cost of US$0.01 per bag, retailers often absorb the price of bags into the price of merchandise they sell. This makes the bag appear free to the consumers, who in turn do not value it, and toss the bag away with little reuse. In a vicious circle, the low cost of the bags drives down the amount of material used to manufacture them, creating bags that are flimsy and not easy to reuse.

The report places an emphasis on learning from the successes and failures of other countries’ approaches to regulating the plastics industry. Several European countries introduced legislation that deals with plastic bags. In Ireland, a surcharge on plastic bags decreased their use by 90%. A similar move in Denmark saw the bag use drop by 66%. Australia and New Zealand have also considered or implemented some plastics regulation legislation. South Africa’s plastic bag problem reached a climax in 2003 — plastic bags littered the street to such an extent that they earned the nickname “national flower”. The country introduced regulations similar to those proposed in Kenya, and within less than a year a reduction in plastic litter was already apparent, according to the report.

The report also recognizes that policies require tradeoffs, and incorporates this into their recommendations. For example, the suggested policy of banning thin bags in favor of thicker ones seems counterintuitive: after all, the thicker ones contain more material that is the cause of the pollution. Furthermore, a ban on thin bags will decimate the industry producing those bags, likely resulting in job losses for Kenyans, as was the case in South Africa when that country introduced similar legislation. However the report notes that this will be offset by increases in production of alternative bags, or in the recycling industry.

The manufacture of plastic bags is a sizable industry. In the United States alone the film, sheet, and bag portion of the plastics industry produces more than $26 billion in sales in one year. The sheer number of plastic bags used are staggering, too: in Hong Kong more than a quarter of a billion bags get used every year, in San Francisco over 50 million, and almost 300 million in Kenya. The SPI — the parent organization of the Film and Bag Federation — claims that more than 80% of consumers reuse plastic bags as trash can liners or for similar purposes, but that’s misleading even when restricted to the United States, as the number of bags used is still very high on a per-capita basis. According to the Worldwatch Institute, an independent environmental organization, Americans throw away 100 billion plastic bags every year, with only 0.6% of the bags being recycled.

The bag manufacturer association in the United States — the Film and Bag Federation — appears aware of environmental issues surrounding their products. The Federation’s web site explores some environmental concerns, mainly recycling and reuse. But the issue of plastic bag overuse or excessive littering in developing countries is not addressed directly on their site.

Donna Dempsey, the Executive Director of the Film and Bag Federation, said in an email to a Wikinews reporter that “there are better ways in Kenya and other places to reduce the amount of bags used, such as re-educating the grocery bag checker not to double bag products and on the amount of groceries one bag is made to carry”. She said that members of the association — companies in the United States and Canada — are investing millions of dollars into “bag to bag” recycling programs, which use material from recycled plastic bags to create new plastic bags, as well as programs that buy back recycled bags and turn them into plastic decking.

The government of Kenya has signaled that they support solutions to problems caused by plastic waste. At the opening speech of the UNEP Governing Council/Ministerial Environment Forum on Feb. 21, 2005, Kenya’s President Mwai Kibaki said: “In our major cities, plastic bags are used in large quantities at the household level. However, these bags are not disposed of in ways that ensure a clean environment. My country welcomes initiatives to address this problem.”

Prof. Wangari Maathai, who is the country’s deputy environment minister, supports the effort from her official position. She promotes the 4-Rs — Reduce, Recycle, Re-use, Repair — and encourages the use of locally-made cotton or sisal bags. Yet as the authors of the report write policy action must be fairly swift to be effective, so should the government commit to the report authors’ recommendations it will have to quickly match political action with their words of support.

Plastic bag pollution has been a contentious issue with the people of Kenya for a number of years. Six years ago, the Wildlife Clubs of Kenya organized a campaign march to urge the government to regulate the bag producers. But not everyone is optimistic about the plans to regulate plastic bags. Dave Jones from Nairobi believes that the way to control pollution is to have clear policies on land ownership: “No single land owner would allow his property to be polluted by others” he writes in a letter to Kenya’s daily newspaper, the Daily Nation. In South Africa after the bag regulations were implemented negative reactions included concerns that the poor already re-used the flimsy bags as source materials in producing home-made items such as hats or purses — occupations made impossible by the ban.

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MMA is defined as Mixed Martial Arts. It is full contact battle sports that give a broad range of struggle techniques, from a jumble of traditional wrestling, to be used in opposition. An MMA workout that make Strength and conditioning are keys to MMA victory .The rules of ufc workout give the use of striking methods, both as footing and on the earth.

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Sleep is vital along with relaxation, so that body has ability to revitalise itself. It’s also vital to lose the attitude before you begin training. One of the most chief points is to choose the right gym.MMA is defined as Mixed Martial Arts. It is full contact battle sports that give a broad range of struggle techniques, from a jumble of traditional wrestling, to be used in opposition. An MMA workout that make Strength and conditioning are keys to MMA victory .The rules of ufc workout give the use of striking methods, both as footing and on the earth.

Such wars allow martial performer of dissimilar surrounding to compete. Unlike some sports that have a partial range of activity and ability required, MMA tuition require a full body routine. Basics start with muscle building and power ornamental moves. There are a number of ufc workout and equipment that help in muscle structuring and powering. Free weights are the simplest and most inexpensive tool for players who use a high deal of time working at home.

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Sleep is vital along with relaxation, so that body has ability to revitalise itself. It’s also vital to lose the attitude before you begin training. One of the most chief points is to choose the right gym.

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Un cura católico afirma que en el yoga y Harry Potter está “la mano de Satanás”

2 de junio de 2013
Gabriele Amorth, un cura católico de Roma, dijo en el diario The Sunday Times que pedirá al actual papa Francisco que se autorice realizar exorcismos sin previo visto bueno por parte del Vaticano y declaró que veía en el yoga y en la saga Harry Potter “la mano de Satanás”.

Amorth es actualmente el sacerdote con más exorcismos realizados por la Iglesia católica. Sus declaraciones han causado mofa en redes sociales y gran indignación entre los aficionados de la saga de Harry Potter y los practicantes del yoga.

Un cura católico afirma que en el yoga y Harry Potter está “la mano de Satanás”

2 de junio de 2013
Gabriele Amorth, un cura católico de Roma, dijo en el diario The Sunday Times que pedirá al actual papa Francisco que se autorice realizar exorcismos sin previo visto bueno por parte del Vaticano y declaró que veía en el yoga y en la saga Harry Potter “la mano de Satanás”.

Amorth es actualmente el sacerdote con más exorcismos realizados por la Iglesia católica. Sus declaraciones han causado mofa en redes sociales y gran indignación entre los aficionados de la saga de Harry Potter y los practicantes del yoga.

Un cura católico afirma que en el yoga y Harry Potter está “la mano de Satanás”

2 de junio de 2013
Gabriele Amorth, un cura católico de Roma, dijo en el diario The Sunday Times que pedirá al actual papa Francisco que se autorice realizar exorcismos sin previo visto bueno por parte del Vaticano y declaró que veía en el yoga y en la saga Harry Potter “la mano de Satanás”.

Amorth es actualmente el sacerdote con más exorcismos realizados por la Iglesia católica. Sus declaraciones han causado mofa en redes sociales y gran indignación entre los aficionados de la saga de Harry Potter y los practicantes del yoga.

Testing Challenges Post Mobile Application Development

Testing Challenges Post Mobile Application Development



Mobile app development is a rapidly proliferating phenomenon worldwide owing to the user convenience the developers promise. With an app for a particular business or personal task, it seems as if life has become a cakewalk. Whether the apps are related to navigation, m-commerce app, or simply gaming, they serve the respective purpose significantly and are even pretty affordable, in fact free at times.

However, it really needs the companies to put forth thoughtful steps in order to check whether the application is functional or not. During app testing, a host of factors hence require to be taken care of, some of them are listed here:

Device type: Depending on whether the mobile device is a smartphone, tab, iPhone, iPad, etc., their keypads, screen size & resolution, hardware and more, keep on changing.

Mobile platforms: There is a profusion of mobile platforms and operating systems for which apps are available at present. Each of these OS, whether iOS, Android, Windows Phone or BlackBerry, among others are often hard to test using any single method.

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Operators: Network operators, such as those with GSM or CDMA facility may also pose severe threat to app testing methods, due to variations in network infrastructures and limited information flow.

Despite these challenges, the professional testers keep on pushing their limits to check mobile applications for proper functioning on a number of criterion. Some of the important testing methods that they use thus include:

Functional testing: As the name suggests, this method checks appropriate working of the mobile apps. It intends to test the app for fully functional UI, flow of calls, etc. It involves the use of numerous test cases in terms of OS, browsers, device and more.

Performance testing: After the mobile app development, it is duly tested for its performance in adverse circumstances. Considerations such as low bandwidth, latency and packet loss are taken care of. Other points such as poor network, low battery and limited memory are also equally important. Besides these, a worthwhile test case is to check the app\’s performance during its use by multiple users.

Usability testing: This step makes it sure that the app is able to achieve what it is meant for. If unfortunately it is not tested satisfyingly and is launched for the users, it is likely to get odd reviews, which is a suicidal attempt on the part of the concerned mobile application development company. Hence, it is necessary to ensure that the app is proving true to expectations and is able to achieve the intended target.

Testing for memory leakage: The problem of memory leak occurs if the app ceases to manage the allocated memory, thereby leading to its malfunctioning or bad performance. Testing for this flaw is of high significance on all the widely used mobile platforms including Android, iOS and so on, since it has a big role to play in the app\’s flawless working.

Once a newly developed mobile app undergoes all the essential testing methods, chances for it to perform above par among the targeted users rises to manifolds. Though, it is hard to test it owing to a host of platforms, devices and network on which they run, still proper testing does matter a lot, post mobile application development.

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iPad (/?a?pæd/ EYE-pad) is a line of tablet computers designed and marketed by Apple Inc., which runs Apple’s iOS. The first iPad was released on April 3, 2010; the most recent iPad models, the iPad Air and second generation iPad Mini, were revealed on October 22, 2013 and went on sale November 1, 2013, and November 12, 2013, respectively. The user interface is built around the device’s multi-touch screen, including a virtual keyboard. The iPad has built-in Wi-Fi and, on some models, cellular connectivity. As of June, 2014, there have been over 200 million iPads sold since its release in 2010.[5]

An iPad can shoot video, take photos, play music, and perform Internet functions such as web-browsing and emailing. Other functions—games, reference, GPS navigation, social networking, etc.—can be enabled by downloading and installing apps. As of October 2013, the App Store has more than 475,000 native apps by Apple and third parties.[14]

There have been five versions of the iPad. The first generation established design precedents, such as the 9.7-inch screen size and button placement, that have persisted through all models. The iPad 2 added a dual core Apple A5 processor and VGA front-facing and 720p rear-facing cameras designed for FaceTime video calling. The third generation added a Retina Display, the new Apple A5X processor with a quad-core graphics processor, a 5-megapixel camera, HD 1080p video recording, voice dictation, and 4G (LTE). The fourth generation added the Apple A6X processor and replaces the 30-pin connector with an all-digital Lightning connector. The iPad Air added the Apple A7 processor, the Apple M7 motion coprocessor and reduced the thickness for the first time since the iPad 2. iOS 6.0 added Siri to the third and fourth generations and the iPad Mini.

There have been two versions of the iPad Mini. The first generation features a reduced screen size of 7.9 inches and features similar internal specifications as the iPad 2 except it uses the Lightning connector. The second generation features the Retina Display, the Apple A7 processor and the Apple M7 motion coprocessor, closely matching the internals specifications of the iPad Air.

In the last quarter of 2013, there were 26 million iPads sold, a new record, compared to 22.9 million in the last quarter of 2012.[15]

Apple co-founder Steve Jobs said in a 1983 speech[16] that Apple’s

strategy is really simple. 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 was the Newton MessagePad 100,[17][18] introduced in 1993, powered by an ARM6 processor core developed by ARM, Ltd., a 1990 spinout of Acorn Computers in which Apple invested. Apple also developed a prototype PowerBook Duo-based tablet, the PenLite, but decided not to sell it in order to avoid hurting MessagePad sales.[19] 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 multi-touch 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.[20] The iPad was announced on January 27, 2010, by Jobs at an Apple press conference at the Yerba Buena Center for the Arts in San Francisco.[21][22]

He later said that Apple had begun developing the iPad before the iPhone,[23][24] but had temporarily shelved the effort upon realizing that its ideas would work just as well in a mobile phone.[25] The iPad’s internal codename was K48, which was revealed in the court case surrounding leaking of iPad information before launch.[26]

Apple began taking pre-orders for the first-generation iPad from American customers on March 12, 2010.[3] 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 to perform either sound muting or screen rotation locking (user selectable).[27] The Wi-Fi version of the iPad went on sale in the United States on April 3, 2010.[3][28] The Wi-Fi + 3G version was released on April 30.[3][4][4] 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.[29][30] 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.[31] The plans are activated on the iPad itself and can be canceled at any time.[32]

The iPad was initially only available online at the Apple Store as well as the company’s retail locations, but has since become available for purchase through retailers including Amazon, Walmart, and network operators. The iPad was launched in countries including Australia, Canada, France, Germany, Japan and the United Kingdom on May 28.[33][34] Online pre-orders in those countries began on May 10.[4] Apple released the iPad in Hong Kong, Ireland, Mexico, New Zealand and Singapore on July 23, 2010.[35][36][37] Israel briefly prohibited importation of the iPad because of concerns that its Wi-Fi might interfere with other devices.[38] On September 17, 2010, the iPad was officially launched in China.[39]

300,000 iPads were sold on their first day of availability.[40] By May 3, 2010, Apple had sold a million iPads,[41] this was in half the time it took Apple to sell the same number of first generation iPhones.[42] After passing the one million mark they continued selling rapidly reaching 3 million sales after 80 days.[43] During the October 18, 2010, Financial Conference Call, Steve Jobs announced that Apple had sold more iPads than Macs for the fiscal quarter.[44] In total, Apple sold more than 15 million first-generation iPads prior to the launch of the iPad 2.[45] — selling more than all other tablet PCs combined since the iPad’s release.[46] and reaching 75% of tablet PC sales at the end of 2010.[47]

Jobs unveiled the iPad 2 at a March 2, 2011, press conference.[48][49] About 33% thinner than its predecessor and 15% lighter, the iPad 2 has a better processor, a dual core Apple A5 that Apple says is twice as fast as its predecessor for CPU operations and up to nine times as fast for GPU operations. The iPad 2 includes front and back cameras that support the FaceTime videophone application, as well as a three-axis gyroscope. It retained the original’s 10-hour battery life and had a similar pricing scheme.

The successor to the iPad 2 was unveiled on March 7, 2012 by Apple CEO Tim Cook at the Yerba Buena Center for the Arts.[50][51] The new iPad contained a new dual core A5X processor with quad-core graphics, and a Retina Display with a resolution of 2048 by 1536 pixels,[52] more than 50 percent more pixels than a standard 1,920 by 1,080 high definition TV screen. A brief controversy erupted when it was revealed that the LTE advertised did not work in some countries.[53]

On October 23, 2012, Apple announced the fourth generation iPad, which began shipping on November 2, 2012. The new hardware includes an A6X processor, HD FaceTime camera, improved LTE compatibility, and the all-digital Lightning connector. It is available in the same storage increments and pricing structure as the third generation.[54][55] Following the announcement of the fourth-generation iPad, the previous generation was discontinued.

Alongside the launch of the 4th generation hardware, Apple announced the iPad Mini. With a screen measuring 7.9 inches, it is aimed at the emerging sector of smaller tablets such as the Kindle Fire and Nexus 7. The hardware of the new iPad Mini is similar to the iPad 2, with a 1024 by 768 pixel resolution screen and a dual core A5 processor, but is 53% lighter and 7.2mm thick. It was released on November 2, in 16GB, 32GB, and 64GB capacities and WiFi or Wi-Fi + Cellular versions.[55]

On October 22, 2013, Apple introduced the fifth generation of iPad, called the iPad Air, and a new second generation iPad Mini that comes with a Retina Display. The iPad Air went on sale on November 1, 2013, starting at $499, while the second generation iPad Mini was released on November 12, 2013, starting at $399.

The iPad’s (first two generations) touchscreen display is a 1,024 by 768 pixel, 7.75×5.82 in (197×148 mm) liquid-crystal display (diagonal 9.7 in (246.4 mm)), with fingerprint- and scratch-resistant glass. Steve Jobs said a 7-inch screen would be “too small to express the software” and that 10 inches was the minimum for a tablet screen.[56] Like the iPhone, the iPad is designed to be controlled by bare fingers; normal, non-conductive gloves and styli do not work,[57] although there are special gloves and capacitive styli designed for this use.[58][59]

The display responds to other sensors: an ambient light sensor to adjust screen brightness and a 3-axis accelerometer to sense iPad orientation and switch between 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.[60]

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.[61] 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.[6]

The first generation iPad had no camera; the iPad 2 has a front VGA camera and a rear-facing 720p camera, both capable of still images (but these are only taken at a low quality 0.3 megapixels) and 30fps video. The rear-facing camera has a 5× digital zoom for still images only. Both shoot photo and video in a 4:3 fullscreen aspect ratio, unlike the iPhone 4, which shoots in a 16:9 widescreen aspect ratio. Unlike the iPhone, the iPad does not support tap to focus, but does allow a tap to set auto exposure.[62] The cameras allow FaceTime video messaging with iPhone 4, fourth generation iPod Touch, and Snow Leopard, Lion, and Mountain Lion Macs.[63]

The iPad has two internal speakers reproducing left and right channel audio 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,[12] while the iPad 2 has its speakers behind a single grill.[9] A volume switch is on the right side of the unit. A 3.5-mm TRRS connector audio-out jack on the top-left corner of the device provides stereo sound for headphones with or without microphones and/or volume controls. The iPad also contains a microphone that can be used for voice recording.

The built-in Bluetooth 2.1 + EDR interface allows wireless headphones and keyboards to be used with the iPad.[64] However iOS does not currently support file transfer via Bluetooth.[65] iPad also features 1024×768 VGA video output for limited applications,[66] screen capture,[67] connecting an external display or television through an accessory adapter.

The iPad uses an internal rechargeable lithium-ion polymer (LiPo) battery. The batteries are made in Taiwan by Simplo Technology (60%) and Dynapack International Technology.[68] The iPad is designed to be charged with a high current of 2 amperes using the included 10 W USB power adapter and USB cord with a USB connector at one end and a 30-pin dock connector at the other end. 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.[69]

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 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.[70][71] As a different unit is supplied, user data is not preserved. The refurbished unit will have a new case.[72] 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. The task does not require soldering, but is technically challenging.[73]

The iPad was released with three capacity options for storage: 16, 32, or 64 GB of internal flash memory. On January 29, 2013, Apple announced a 128 GB model of the fourth generation iPad, which was released on February 5.[11] 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.[74]

iPad models come in two basic variants: Wi-Fi only and Wi-Fi with cellular support. The cellular variants however do not support circuit-switched voice calls and texts, only data connectivity. The side of the Wi-Fi + 3G iPad had a micro-SIM slot (not mini-SIM). The 3G iPad can be used with any compatible GSM carrier, unlike the iPhone, which is usually sold ‘locked’ to specific carriers.[75] On the first generations of the iPad in the U.S., data network access via T-Mobile’s network was limited to slower EDGE cellular speeds because T-Mobile’s 3G Network at the time used different frequencies.[76][77]

The iPad 2 introduced a third tier of models with CDMA support for Verizon Wireless in the United States, available separately from the AT&T capable version.[78]

The iPad up to the 4th generation uses a Micro-SIM, while the first generation iPad Mini uses a nano-SIM as introduced with the iPhone 5. The iPad mini is available with two different frequency bands worldwide. Both devices support the same quad-band GSM and quad-band UMTS frequencies, but one variant also supports LTE bands 4 and 17 (principally intended for use on the U.S. AT&T network), while the other adds support for LTE bands 1, 3, 5, 13, 25 and CDMA EV-DO Rev. A and Rev. B.

The 5th generation iPad and 2nd generation iPad mini introduced support for many additional LTE bands worldwide. The iPad Air and Mini with Retina display cellular models come in two variants each, all of which support nano-SIMs, quad-band GSM, penta-band UMTS, and dual-band CDMA EV-DO Rev. A and B. Additionally, one variant of each iPad also supports LTE bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25 and 26 while the other variant supports LTE bands 1, 2, 3, 5, 7, 8, 18, 19, 20 and TD-LTE bands 38, 39 and 40. Apple’s ability to handle many different bands in one device allowed it to offer, for the first time, a single iPad variant which supports all the cellular bands and technologies deployed by all the major North American wireless providers at the time of the device’s introduction. Moreover, with T-Mobile USA selling the iPad Air and Mini with Retina display, these models became the first iPads that were made available for purchase directly from all four nation-wide U.S. wireless carriers (and, as previously indicated, with all U.S. carriers now selling the same hardware variant of the device).

Apple offers several iPad accessories,[79] most of which are adapters for the proprietary 30-pin dock connector, the iPad’s only port besides the headphone jack.[6] 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 was only supported for the original iPad,[80] but all generations are compatible with Bluetooth keyboards that also work with Macs and PCs. The iPad can be charged by a standalone power adapter (“wall charger”) also used for iPods and iPhones, and a 10 W 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 card reader. Adapter can be used to transfer photos and videos and to plug USB audio card or MIDI keyboard.[81] A third party sells an adapter that includes USB, SD, and microSD on a single unit.[82] An adapter to VGA connectors allows the iPad to work with external monitors and projectors. Another adapter mirrors the screen onto HDMI compatible devices in 1080p and works with all apps and rotations. Unlike other adapters, it allows the iPad to charge through another dock connector.[83] While the HDMI adapter was released with and advertised for the iPad 2, it also works with the first-generation iPad, the iPhone 4, and the fourth generation iPod Touch.[84]

Smart Covers are screen protectors that magnetically attach and align to the face of the iPad 2, 3, or 4. The cover has three folds which allow it to convert into a stand, which is also held together by magnets.[85] 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 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.[86] In June 2012, Apple started selling the Smart Case – a case with the combined function of a smart cover and a back protection case which is compatible with the iPad 2, and iPad 3rd & 4th generation devices.[87]

Like the iPhone, with which it shares a development environment[88] 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.[89][not in citation given] The iPad runs almost all third-party iPhone applications, displaying them at iPhone size or enlarging them to fill the iPad’s screen.[90] Developers may also create or modify apps to take advantage of the iPad’s features.[91] Application developers use iOS SDK for developing applications for iPad.[92] The iPad originally shipped 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;[93] to fulfill this Apple released iOS 4.2.1 to the public on November 22.[94]

The interface is centred around the home screen, a graphical list of available applications. The home screen can be accessed at any time by a hardware button below the screen, closing an open application in the process.[95]

Users can also add and delete icons from the dock, which is the same on every home screen. Each home screen holds up to sixteen icons, and the dock holds up to four icons. Users can delete Web Clips and third-party applications at any time, and may select only certain applications for transfer from iTunes. Apple’s default programs, however, may not be removed.

Almost all input is given through the touch screen, which understands complex gestures using multi-touch. The iPad’s interaction techniques enable the user to move the content up or down by a touch-drag motion of the finger. For example, zooming in and out of web pages and photos is done by placing two fingers on the screen and spreading them farther apart or bringing them closer together, a gesture known as “pinching”.

Scrolling through a long list or menu is achieved by sliding a finger over the display from bottom to top, or vice versa to go back. In either case, the list moves as if it is pasted on the outer surface of a wheel, slowly decelerating as if affected by friction. In this way, the interface simulates the physics of a real object.

Other user-centered interactive effects include horizontally sliding sub-selection, the vertically sliding keyboard and bookmarks menu, and widgets that turn around to allow settings to be configured on the other side. Menu bars are found at the top and bottom of the screen when necessary. Their options vary by program, but always follow a consistent style motif. In menu hierarchies, a “back” button in the top-left corner of the screen displays the name of the parent folder.

The layout of the music library is similar to that of an iPod or current Symbian S60 phones. The iPad can sort its media library by songs, artists, albums, videos, playlists, genres, composers, podcasts, audiobooks, and compilations. Options are always presented alphabetically, except in playlists, which retain their order from iTunes. The iPhone uses a large font that allows users plenty of room to touch their selection.

Users can rotate their device horizontally to landscape mode to access Cover Flow. Like on iTunes, this feature shows the different album covers in a scroll-through photo library. Scrolling is achieved by swiping a finger across the screen. Alternatively, headset controls can be used to pause, play, skip, and repeat tracks.

The iPad supports gapless playback.[96] Like the fifth-generation iPods introduced in 2005, the iPad can play digital video, allowing users to watch TV shows and movies in widescreen. Double-tapping switches between widescreen and fullscreen video playback.

The iPad allows users to purchase and download songs from the iTunes Store directly to their iPad. It includes software that allows the user to upload, view, and email photos taken with the camera. The user zooms in and out of photos by sliding two fingers further apart or closer together, much like Safari. The Camera application also lets users view the camera roll, the pictures that have been taken with the iPad’s camera. Those pictures are also available in the Photos application, along with any transferred from iPhoto or Aperture on a Mac, or Photoshop on a Windows PC.

The iPad can use Wi-Fi network trilateration from Skyhook Wireless to provide location information to applications such as Google Maps. The 3G model supports A-GPS 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.[97] The iPad has a headphone jack and a proprietary Apple dock connector, but no Ethernet or USB port.[6] However, the Apple Camera Connection Kit accessory provides two dock connector adapters for importing photos and videos via USB and SD memory cards.

The iPad comes with several applications, including Safari, Mail, Photos, Video, iPod, iTunes, App Store, iBooks, Maps, Notes, Calendar, and Contacts.[98] Several are improved versions of applications developed for the iPhone or Mac.

The iPad syncs with iTunes on a Mac or Windows PC.[21] Apple ported its iWork suite from the Mac to the iPad, and sells pared down versions of Pages, Numbers, and Keynote apps in the App Store.[99] 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 telephone calls over Wi-Fi or 3G using a VoIP application.[100] As of June 2012, there were about 225,000 iPad specific apps on the App Store.[101]

In December 2010, Reuters 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.[102]

The iPad has an optional iBooks application that can be downloaded from the App Store, which displays books and other ePub-format content downloaded from the iBookstore.[103] For the iPad launch on April 3, 2010, the iBookstore is available only in the United States.[3][21][98] Several major book publishers including Penguin Books, HarperCollins, Simon & Schuster and Macmillan have committed to publishing books for the iPad.[104] Despite its being a direct competitor to both the Amazon Kindle and Barnes & Noble Nook,[105] both Amazon.com and Barnes & Noble have made Kindle and Nook apps available for the iPad.[106][107]

In February 2010, Condé Nast said it would sell iPad subscriptions for several of its magazines by June.[108]

In April 2010, the New York Times announced that it would begin publishing daily on the iPad.[109] The “Top News” section is available free of charge, and the remainder on payment of a subscription.[110] Major news organizations, including The Wall Street Journal, the BBC, and Reuters have released iPad applications. NewsCorp created an iPad-only publication, The Daily, in February 2011.[111] It ceased operations in December 2012.

Other models are listed on a comparison grid here. The most recent models are the iPad Air and the second generation iPad Mini, both announced on October 22, 2013.

The iPad is assembled by Foxconn, which also manufactures Apple’s iPod, iPhone and Mac Mini, in its largest plant in Shenzhen, China.[130] 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.[131]

iSuppli estimated that each first-generation iPad 16 GB Wi-Fi version costs US$259.60 to manufacture, a total that excludes research, development, licensing, royalty and patent costs.[132] Apple does not disclose the makers of iPad components, but teardown reports and analysis from industry insiders indicate that various parts and their suppliers include:

The iPad does not employ Digital Rights Management, 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.[142][143][144]

Digital rights advocates, including the Free Software Foundation,[145] Electronic Frontier Foundation,[144] and computer engineer and activist Brewster Kahle,[citation needed] have criticized the iPad for its digital rights restrictions. In April 2010, Paul Sweeting, an analyst with GigaOM, 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, 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.”[146] The Russian government has switched from iPads to Android devices over security concerns.[147]

Like certain iOS devices, the iPad can be “jailbroken”, depending on which version of iOS it is running, thus allowing applications and programs that are not authorized by Apple to run on the device.[148][149] 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.[149] Apple claims jailbreaking “can” void the factory warranty on the device in the United States even though jailbreaking is legal.[149][150] The iPad, released in April 2010, was first jailbroken in May 2010 with the Spirit jailbreak for iOS version 3.1.2.[151] 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),[152] and on iOS versions including 5.0 and 5.0.1 using redsn0w[153] 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.[154]

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.[155]

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.[156] In an e-mail exchange[157] 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[158] and in San Francisco during WWDC10.[159]

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.[160][161]

Media reaction to the iPad announcement 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.[162] 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.[163][164] 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.[165][166][167]

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.[168]

Reviews of the iPad have been generally favorable. Walt Mossberg of The Wall Street Journal called it a “pretty close” laptop killer.[169] 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.[170] PC Magazine’s Tim Gideon wrote, “you have yourself a winner” that “will undoubtedly be a driving force in shaping the emerging tablet landscape.”[171] 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.”[172] PC World criticized the iPad’s file sharing and printing abilities,[173] and ArsTechnica said sharing files with a computer is “one of our least favorite parts of the iPad experience.”[174]

The media also praised the quantity of applications, as well as the bookstore and other media applications.[175][176] In contrast they criticized the iPad for being a closed system and mentioned that the iPad faces competition from Android-based tablets.[160] However, the Android tablet OS, known as “Honeycomb”, is not open source and has fewer apps available for it than for the iPad.[177] 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.[175] After its UK release, The Daily Telegraph said the iPad’s lack of Adobe Flash support was “annoying.”[178]

The iPad was selected by Time Magazine as one of the 50 Best Inventions of the Year 2010,[179] while Popular Science chose it as the top gadget[180] behind the overall “Best of What’s New 2010″ winner Groasis Waterboxx.[181]

While the iPad is mostly used by consumers, it also has been taken up by business users.[182] Within 90 days of its release, the iPad managed to penetrate 50% of Fortune 100 companies.[183] 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.[184][185][186]

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].”[187]

Since March 2011, the US Federal Aviation Administration has approved the iPad for in-cockpit use to cut down on the paper consumption in several airlines.[188] In 2011, Alaska Airlines 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.[189] More than a dozen airlines have followed suit, including United, which has distributed 11,000 iPads to cockpits.[190] Also, many airlines now offer their inflight magazine as a downloadable application for the iPad.[191][192][193]

The iPad has several uses in the classroom,[194] and has been praised as a valuable tool for homeschooling.[195][196] Soon after the iPad was released, it was reported that 81% of the top book apps were for children.[197] The iPad has also been called a revolutionary tool to help children with autism learn how to communicate and socialize more easily.[198]

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.”[199]

In 2013, Gianna Chien (aged 14) presented to more than 8,000 doctors at the Heart Rhythm Society meeting that Apple iPad 2 can, in some cases, interfere with life-saving heart devices (pace maker) because of the magnets inside.[200] Apple’s webpage has advised pacemaker users to keep iPads at least 6-inches away from the pacemaker.

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.[201] 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.[202]

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.[203] The music video for Luna Sea’s 2012 single, “Rouge”, was filmed entirely on an iPad.[204]

The iPad has also 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 specialised 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.[205]