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The first-generation iPad showing its home screen Developer Apple Inc. Manufacturer Foxconn (on contract) [1]

Type Tablet computer

Release date

Wi-Fi model (U.S.): April 3, 2010 [2][3] Wi-Fi + 3G Model (U.S.): April 30, 2010 [4] International: May 28, 2010 [5] iPad 2 (U.S.): March 11, 2011 [6] iPad 2 (International): March 25, 2011 3rd gen (U.S.): March 16, 2012

Units sold 67.1 million (as of 31 March 2012) [7][8][9][10][11][12][13][14]

Operating system 5.1.1 Latest version released May 7, 2012

Power Built-in rechargeable Li-Po battery 25 W·h (90 kJ), 10hr life [15]

CPU

1st generation 1 GHz Apple A4 [15][16] 2nd generation 1 GHz Apple A5 3rd generation 1 GHz Apple A5X Storage capacity 16, 32, or 64 GB flash memory [15]

Memory

1st generation 256 MB DDR RAM [17] 2nd generation 512 MB DDR2 RAM [18] 3rd generation 1 GB DDR2 RAM [19]

Display

1st & 2nd generation 1024 × 768 px 132 PPI 4:3 aspect ratio 9.7 in (250 mm) diagonal XGA, LED-backlit IPS LCD [15] 3rd generation 2048×1536 px 264 PPI

Graphics

1st generation PowerVR SGX535 [20] 2nd generation PowerVR SGX543MP2 [21] 3rd generation PowerVR SGX543MP4

Input

Multi-touch screen, headset controls, proximity and ambient light sensors, 3-axis accelerometer, digital compass 2nd generation adds: 3-axis gyro

Camera

1st generation: None 2nd generation: Front-facing and 720p rear-facing 3rd generation: Front-facing and 1080p rear-facing

Connectivity

Wi-Fi (802.11 a/b/g/n) 1st & 2nd Generation Bluetooth 2.1 + EDR GSM models also include: UMTS / HSDPA (850, 1,900, 2,100 MHz) GSM / EDGE (850, 900, 1,800, 1,900 MHz) CDMA model also includes: CDMA/EV-DO Rev. A (800, 1,900 MHz) 3rd Generation Bluetooth 4.0 technology GSM models also include: LTE (700, 2,100 MHz) UMTS /HSDPA/HSPA+/DC-HSDPA (850, 900, 1,900, 2,100 MHz) GSM /EDGE (850, 900, 1,800, 1,900 MHz)

CDMA model also includes: LTE (700 MHz) CDMA/EV-DO Rev. A (800, 1,900 MHz) UMTS /HSDPA/HSPA+/DC-HSDPA (850, 900, 1,900, 2,100 MHz) GSM /EDGE (850, 900, 1,800, 1,900 MHz) Online services iTunes Store, App Store, iCloud, iBookstore

Dimensions

1st generation

9.56 in (243 mm) (h) 7.47 in (190 mm) (w) 0.50 in (13 mm) (d) 2nd generation 9.50 in (241 mm) (h) 7.31 in (186 mm) (w) 0.34 in (8.6 mm) (d) 3rd generation 9.50 in (241 mm) (h) 7.31 in (186 mm) (w) 0.37 in (9.4 mm) (d)

Weight

Wi-Fi model: 1.5 lb (680 g) Wi-Fi + 3G model: 1.6 lb (730 g) [15] 2nd generation: 1.325 lb (601 g) 3rd generation Wi-Fi model: 1.44 lb (650 g) 3rd generation Wi-Fi + 4G model: 1.46 lb (660 g) Related articles iPhone, iPod touch (Comparison) Website apple.com/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 or a developer certificate, 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 with Wi-Fi and cellular models. The Wi-Fi connection is used to access local area networks and the Internet. Cellular models connect to mobile data networks with 3G or 4G 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 [22] and selling 3

million in 80 days. [23] During 2010, Apple sold

14.8 million iPads worldwide, [7][8][9] representing

75% of tablet PC sales at the end of 2010. [24] By the release of the iPad 2 in March 2011, more than

15 million iPads had been sold [25] —selling more than all other tablet PCs combined since the iPad's

release. [26] In 2011, it took approximately 73% of the tablet computing market share in the United

States. [27] During the fourth quarter of 2011, Apple

sold 15.4 million iPads.