Though there are many different tablet computer in the maret, the most popular and? well-reputed one must be iPad. The iPad is a line of tablet computers designed and marketed by Apple Inc. Its size and weight fall between contemporary smartphones and laptop computers.
So fat, iPad family contains several members, iPad, iPad 2, iPad 3, and the new iPad mini which will be released latter. The first iPad was released in April 2010,? at that time, no company pay much attention to tablet computer and all believe it can’t make money. But let us just? retrospect a bit,? the first generation iPad sells 300,000 units on the first day and 3 million in 80 days. What should we say?! Legend!! Apple changed the world again!
After a while, many big companies went into this market,? Microsoft released its Surface, Amazon released its Kindle Fire, Acer’s Iconia Tab. Even so, during 2010, Apple sold 14.8 million iPads worldwide, representing 75% of tablet PC sales at the end of 2010. By the release of the iPad 2 in March 2011, more than 15 million iPads had been sold —selling more than all other tablet PCs combined since the iPad’s release. In 2011, it took approximately 73% of the tablet computing market share in the United States.During the fourth quarter of 2011, Apple sold 15.4 million iPads.
|Model||iPad||iPad 2||iPad 3|
|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||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||1 GHz (dynamically clocked) dual-core Apple A5 system-on-a-chip||1 GHz (dynamically clocked) dual-core Apple A5X system-on-a-chip|
|Memory||256 MB DDR RAM built into Apple A4 package||512 MB DDR2 (1066 Mbit/s data rate) RAM built into Apple A5 package||1024 MB DDR2|
|Storage||16, 32, or 64 GB|
|Operating system||iOS 5.1.1||iOS 5.1.1 / iOS 6.0|
|Battery||Built-in lithium-ion polymer battery; (10 hours (Wi-Fi), 9 hours (3G or LTE) browsing; 10 hours video; 140 hours audio;1 month standby|
|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)||9.5×7.31×0.346 in (240×186×8.8?mm)||9.5×7.31×0.37 in (240×186×9.4 mm)|
|Camera Front||N/A||720 p HD still and video camera? 0.7 MP, 30fps and 5× digital zoom||1080p HD still and video camera5 MP, 30fps and 5× digital zoom|
|Camera Back||N/A||VGA-quality still and videocamera, 0.3 MP|
The iPad runs iOS sys designed by Apple itself, this operating system also used on Apple’s iPod Touch and iPhone, and can run its own applications as well as iPhone applications.
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.
iPad supports mp4 video format, you can purchase mp4 videos from Apple Store, and can also rip DVDs to mp4 and transfer mp4 files to iPad, this can save much money. To rip DVDs to iPad, you can use Longo DVD Ripper , and follow the guide—”How to rip DVDs to ipad?“. For mac uses, just use Longo Mac DVD Ripper, and the guide is “Rip DVDs to iPad on mac.”