Apple's second-generation iPad, introduced in March 2011. Thinner and faster, it included cameras, which were not on the iPad 1. The one-megapixel rear camera was sufficient for video calling but not for printing large photos. Three ounces lighter, RAM was increased to 512MB, but storage was unchanged (16-64GB). A Digital AV Adapter enabled everything on screen to display on a TV via HDMI. Previously, only apps that supported an external display would work. See iPad
and Smart Cover
The iPad 2 Was Faster for Games
The faster CPU and graphics, gyro and accelerometer showed up in games such as Real Racing 2 HD. Steering the car was done by moving the iPad like a steering wheel.