Introduction to the ipad
At this present moment the ipad come in three different basic configurations, extra choices can be the size of internal storage 18gb 32gb 64gb and their connectivity, WiFi cellular or 3G. The original ipad is no longer available, however apple sold 15 million prior to the introduction of the ipad2
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhIURjpa9UEDZjhjO9Pan4h7flflQ1pd2lvvL0zADB0TwJAhbzXANJHScf7R9Az6g3rtTWdrpSJNVQOL66Kznmo9GjC_fEMECVEAOUf_UCbNoudqVFkRGZIEMI967pQFe0lMgeve1Xmk_Y/s400/Screen+Shot+2013-10-11+at+09.35.12.png) |
Three types of ipad |
Screen & resolution
ipad1 9.7-inch 1024x768 resolution at 132 pixels per inch (ppi)
Mini 7.9-inch 1024x768 resolution at 163 pixels per inch (ppi)
ipad2 9.7-inch 1024x768 resolution at 132 pixels per inch (ppi)
ipad 9.7-inch 2048x1536 resolution at 264 pixels per inch (ppi)
Therefore all screen have the same aspect ratio 4 by 3.
All have multi-touch display
Processor
ipad1 Apple A4
Mini Dual core A5
ipad2 Dual core A5
ipad Dual core A6x with quad core graphics.
OS
ipad1 iso 5.1
Mini iso 6/7
ipad2 iso 6/7
ipad iso 6/7
Environmental sensors
ipad1 Accelerometer, ambient light sensor, magnetometer,
Mini Accelerometer, ambient light sensor, magnetometer, gyroscope
ipad2 Accelerometer, ambient light sensor, magnetometer, gyroscope
ipad Accelerometer, ambient light sensor, magnetometer, gyroscope
Cameras
ipad1 None
Mini
Back 1080p HD still and video camera 5 MP, 30fps and 5× digital zoom
Front 1.2 MP still, 720p video
ipad2
Back 720 p HD still and video camera 0.7 MP, 30fps and 5× digital zoom
Front VGA-quality still and video camera, 0.3 MP
ipad
Back 1080p HD still and video camera 5 MP, 30fps and 5× digital zoom
Front 1.2 MP still, 720p video
Wireless
ipad1 Wi-Fi (802.11a/b/g/n), Bluetooth 2.1+EDR
3G cellular HSDPA, 2G cellular EDGE on 3G models
Mini Wi-Fi (802.11a/b/g/n), Bluetooth 4.0
3G cellular HSDPA, 2G cellular EDGE on 3G models
3G transitional
LTE on 4G model
ipad2 Wi-Fi (802.11a/b/g/n), Bluetooth 2.1+EDR
3G cellular HSDPA, 2G cellular EDGE on 3G models
ipad Wi-Fi (802.11a/b/g/n), Bluetooth 4.0
3G cellular HSDPA, 2G cellular EDGE on 3G models
3G transitional
LTE on 4G model
Geolocation
ipad1 Apple location databases
Mini Apple location databases GPS GLONASS
ipad2 Apple location databases GPS
ipad Apple location databases GPS GLONASS
Sim card
ipad1 Apple location databases
Mini Nano sim
ipad2 Micro sim
ipad Micro sim
Connectors
ipad1 30-pin
Mini Lighting
ipad2 30-pin
ipad Lighting
Reference
http://en.wikipedia.org/wiki/IPad
http://store.apple.com/uk/ipad/compare