iPad
The iPad ( /ˈaɪpæd/ EYE-pad) is a line of tablet computers designed and marketed by Apple Inc., primarily as a platform for audio-visual media including books, periodicals, movies, music, games, apps and web content. Its size and weight fall between those of contemporary smartphones and laptop computers. The iPad runs on iOS, the same operating system used on Apple's iPod Touch and iPhone, and can run its own applications as well as iPhone applications. Without modification, the iPad will only run programs approved by Apple and distributed via the Apple App Store (with the exception of programs that run inside the iPad's web browser).
Like iPhone and iPod Touch, the iPad is controlled by a multitouch display—a departure from most previous tablet computers, which used a pressure-triggered stylus—as well as a virtual onscreen keyboard in lieu of a physical keyboard.
iPad is sold in Wi-Fi and cellular models. The Wi-Fi connection is used to access local area networks and the Internet. Cellular models have a 3G or LTE wireless network interface which can connect to HSPA or EV-DO data networks in addition to Wi-Fi. Since the release of iOS 5, the device does not need to be managed and synced by iTunes running on a personal computer via USB cable.
Apple released the first iPad in April 2010, selling 300,000 units on the first day[21] and selling 3 million in 80 days.[22] During 2010, Apple sold 14.8 million iPads worldwide,[7][8][9] representing 75% of tablet PC sales at the end of 2010.[23] By the release of the iPad 2 in March 2011, more than 15 million iPads had been sold[24]—selling more than all other tablet PCs combined since the iPad's release.[25] In 2011, it took approximately 73% of the tablet computing market share in the United States.[26] During the fourth quarter of 2011, Apple sold 15.4 million iPads.[27]
Like iPhone and iPod Touch, the iPad is controlled by a multitouch display—a departure from most previous tablet computers, which used a pressure-triggered stylus—as well as a virtual onscreen keyboard in lieu of a physical keyboard.
iPad is sold in Wi-Fi and cellular models. The Wi-Fi connection is used to access local area networks and the Internet. Cellular models have a 3G or LTE wireless network interface which can connect to HSPA or EV-DO data networks in addition to Wi-Fi. Since the release of iOS 5, the device does not need to be managed and synced by iTunes running on a personal computer via USB cable.
Apple released the first iPad in April 2010, selling 300,000 units on the first day[21] and selling 3 million in 80 days.[22] During 2010, Apple sold 14.8 million iPads worldwide,[7][8][9] representing 75% of tablet PC sales at the end of 2010.[23] By the release of the iPad 2 in March 2011, more than 15 million iPads had been sold[24]—selling more than all other tablet PCs combined since the iPad's release.[25] In 2011, it took approximately 73% of the tablet computing market share in the United States.[26] During the fourth quarter of 2011, Apple sold 15.4 million iPads.[27]
Model | iPad (original) | iPad 2 | iPad (3rd generation) | |
---|---|---|---|---|
Announcement date | January 27, 2010[33] | March 2, 2011[96] | March 7, 2012 | |
US release date | April 3, 2010[3] | March 11, 2011[97] | March 16, 2012 | |
Discontinued | March 2, 2011[96] | 32, 64 GB: March 7, 2012 16 GB: In production |
In production | |
Display | 9.7 inches (250 mm) multitouch display at a resolution of 1024 × 768 pixels with LED backlighting and a fingerprint and scratch-resistant coating[14] | 9.7 inches (250 mm) multitouch display at a resolution of 2048 × 1536 pixels with LED backlighting and a fingerprint and scratch-resistant coating | ||
Processor | 1 GHz Apple A4 system-on-a-chip[15] | 1 GHz (dynamically clocked) dual-core Apple A5 system-on-a-chip | dual-core Apple A5X system-on-a-chip | |
Memory | 256 MB DDR RAM built into Apple A4 package[16] | 512 MB DDR2 (1066 Mbit/s data rate) RAM built into Apple A5 package[17] | 1 GB RAM[98] | |
Storage | 16, 32, or 64 GB[14] | |||
Wireless | Wi-Fi | Wi-Fi (802.11a/b/g/n), Bluetooth 2.1+EDR[14] | Wi-Fi (802.11a/b/g/n), Bluetooth 4.0 | |
Wi-Fi+3G/4G | In addition to above: 3G cellular HSDPA, 2G cellular EDGE on 3G models[14] |
In addition to above: 3G transitional LTE on 4G model |
||
Geolocation | Wi-Fi | Wi-Fi,[14] Apple location databases[99] | ||
Wi-Fi+3G/4G | Assisted GPS, Apple databases,[99] Cellular network[14] | |||
Environmental sensors | Accelerometer, ambient light sensor, magnetometer[14] | Additionally: gyroscope | ||
Operating system | iOS 5.1 | |||
Battery | Built-in lithium-ion polymer battery; (10 hours (Wi-Fi), 9 hours (3G or LTE) browsing; 10 hours video;[14] 140 hours audio;[100] 1 month standby[101]) | |||
Weight | Wi-Fi model: 1.5 lb (680 g) 3G model: 1.6 lb (730 g) |
Wi-Fi model: 1.325 lb (601 g) GSM 3G (AT&T) model: 1.351 lb (613 g) CDMA 3G (Verizon) model: 1.338 lb (607 g) |
Wi-Fi model: 1.44 lb (650 g) LTE model: 1.46 lb (660 g) |
|
Dimensions | 9.56×7.47×0.528 in (243×190×13.4 mm)[14][102] | 9.5×7.31×0.346 in (240×186×8.8 mm)[102] | 9.5×7.31×0.37 in (240×186×9.4 mm) | |
Mechanical keys | Home, sleep, volume rocker, variable function switch (originally screen rotation lock, mute in iOS 4.2, either in 4.3)[14] | |||
Camera | Back | N/A | 720p HD still and video camera 0.7 MP, 30fps and 5× digital zoom |
1080p HD still and video camera 5 MP, 30fps and 5× digital zoom |
Front | N/A | VGA-quality still and videocamera, 0.3 MP | ||
Greenhouse gas emissions | 130 kg CO2e[103] | 105 kg CO2e[104] |
iPhone
The iPhone ( /ˈaɪfoʊn/ EYE-fohn) is a line of smartphones designed and marketed by Apple Inc. The first iPhone was unveiled by Steve Jobs, then CEO of Apple, on January 9, 2007,[1] and released on June 29, 2007. The 5th generation iPhone, the iPhone 4S, was announced on October 4, 2011, and released 10 days later.
An iPhone can function as a video camera (video recording was not a standard feature until the iPhone 3GS was released), a camera phone, a portable media player, and an Internet client with email and web browsing capabilities, can send texts and receive visual voicemail, and has both Wi-Fi and 3G connectivity. The user interface is built around the device's multi-touch screen, including a virtual keyboard rather than a physical one.
Third-party as well as Apple application software is available from the App Store, which launched in mid-2008 and now has over 500,000[2] "apps" approved by Apple. These apps have diverse functions, including games, reference, GPS navigation, social networking, security, and advertising for television shows, films, and celebrities.
There are five generations of iPhone models, each accompanied by one of the five major releases of iOS (formerly iPhone OS). The original iPhone was a GSM phone, and established design precedents, such as screen size and button placement, that have persisted through all models. The iPhone 3G added 3G cellular network capabilities and A-GPS location. The iPhone 3GS added a compass, faster processor, and higher resolution camera, including video recording at 480p.
The iPhone 4 has a rear-facing camera (720p video) and a front facing camera (at a lower resolution) for FaceTime video calling and for use in other apps like Skype. The iPhone 4 featured a higher-resolution 960x640 display; it was released on June 24, 2010. In the U.S., AT&T was the only authorized carrier until February 10, 2011, when a CDMA version of the iPhone 4 launched for Verizon. On October 4, 2011, Apple announced the iPhone 4S.[3]
The iPhone 4S added a higher resolution camera (8 megapixel) with 1080p video recording, face detection, and video stabilization, a faster, dual core processor, support for both GSM/UMTS and CDMA on one chip, GLONASS support and a natural language voice control system called Siri.[4] It is available in 16 GB and 32 GB, as well as a new 64 GB capacity. In the United States, it was announced that two new carriers, Sprint and C Spire, would begin carrying the iPhone 4 and iPhone 4S in October and November 2011, respectively.[5]
An iPhone can function as a video camera (video recording was not a standard feature until the iPhone 3GS was released), a camera phone, a portable media player, and an Internet client with email and web browsing capabilities, can send texts and receive visual voicemail, and has both Wi-Fi and 3G connectivity. The user interface is built around the device's multi-touch screen, including a virtual keyboard rather than a physical one.
Third-party as well as Apple application software is available from the App Store, which launched in mid-2008 and now has over 500,000[2] "apps" approved by Apple. These apps have diverse functions, including games, reference, GPS navigation, social networking, security, and advertising for television shows, films, and celebrities.
There are five generations of iPhone models, each accompanied by one of the five major releases of iOS (formerly iPhone OS). The original iPhone was a GSM phone, and established design precedents, such as screen size and button placement, that have persisted through all models. The iPhone 3G added 3G cellular network capabilities and A-GPS location. The iPhone 3GS added a compass, faster processor, and higher resolution camera, including video recording at 480p.
The iPhone 4 has a rear-facing camera (720p video) and a front facing camera (at a lower resolution) for FaceTime video calling and for use in other apps like Skype. The iPhone 4 featured a higher-resolution 960x640 display; it was released on June 24, 2010. In the U.S., AT&T was the only authorized carrier until February 10, 2011, when a CDMA version of the iPhone 4 launched for Verizon. On October 4, 2011, Apple announced the iPhone 4S.[3]
The iPhone 4S added a higher resolution camera (8 megapixel) with 1080p video recording, face detection, and video stabilization, a faster, dual core processor, support for both GSM/UMTS and CDMA on one chip, GLONASS support and a natural language voice control system called Siri.[4] It is available in 16 GB and 32 GB, as well as a new 64 GB capacity. In the United States, it was announced that two new carriers, Sprint and C Spire, would begin carrying the iPhone 4 and iPhone 4S in October and November 2011, respectively.[5]