Abstract：Apple Inc. on Wednesday unveiled the second generation of its iPad, in a move to stay ahead in the increasingly crowded tablet computer arena.
Apple is back with a refined second-generation tablet computer that squeezes more power into a thinner shell while keeping prices in check.
Are you ready for Friday, March 11, when the iPad 2 will go on sale? Apple's original iPad drew big crowds during its U.S. and international launches. With that in mind, here's a quick look at some of things you need to know before braving the crowds next Friday.
