The iPad (once known as the Apple Tablet) has been compared to a huge iPhone and has ebook reading and web browsing capabilities. Also similar to the iPhone it has access to Apple's huge App store.
The ipad 2 is going to have 2 cameras. One front facing camera, and one in the back. Also it will have a micro USB port, an sd card slot, and I know it is supposed to have more features.
The ipad 2 contains two cameras and HD video recording. It is a thinner, more sophisticated design and contains a dual-core A5 chip. Overall, the ipad 2 dominates the ipad 1 in every way.