ipad和ipad 2的参数比较

Technical specifications

Further information:  iPad technical specifications

Model		iPad (original)	iPad 2
Announcement date		January 27, 2010[27]	March 2, 2011[86]
US Release date		April 3, 2010[3]	March 11, 2011[87]
Discontinued date		March 2, 2011[citation needed]	In production
Display		9.7 inches (25 cm) multitouch display at a resolution of 1024 × 768 pixels with LEDbacklighting and a fingerprint and scratch-resistant coating[12]
Processor		1 GHz Apple A4 system-on-a-chip[13]	1 GHz (dynamically clocked) dual-core Apple A5 system on a chip
Memory		256 MB DDR RAM built into Apple A4 package[14]	512 MB DDR2 (1066 Mbps data rate) RAM built into Apple A5 package[15]
Storage		16, 32, or 64 GB[12]
Wireless	Wi-Fi	Wi-Fi (802.11a/b/g/n), Bluetooth 2.1+EDR[12]
	Wi-Fi+3G	3G cellular HSDPA, 2G cellular EDGE on 3G models[12]
Geolocation	Wi-Fi	Wi-Fi,[12] Apple location databases[88]
	Wi-Fi+3G	Assisted GPS, Apple databases,[88] Cellular network[12]
Environmental sensors		Accelerometer, ambient light sensor,magnetometer[12]	Additionally: gyroscope
Operating system		iOS 4.3.5[89]
Battery		Built-in lithium-ion polymer battery;(10 hours video,[12] 140 hours audio,[90] 1 month standby[91])
Weight		Wi-Fi model: 680 g (1.5 lb) 3G model: 730 g (1.6 lb)	Wi-Fi model: 601 g (1.32 lb) GSM 3G (AT&T) model: 613 g (1.35 lb) CDMA 3G (Verizon) model: 607 g (1.34 lb)
Dimensions		9.56×7.47×.528 in (243×190×13.4 mm)[12][92]	9.5×7.31×.346 in (240×186×8.8 mm)[92]
Mechanical keys		Home, sleep, volume rocker, variable function switch (originally screen rotation lock, mute in iOS 4.2, either in 4.3)[12]
Camera	Back	N/A	720 p HD still and video camera 30fps and 5x digital zoom
	Front	N/A	VGA-quality still camera