Tablet sales expected to rise fivefold by 2017

Global tablet computer sales are predicted to reach nearly 330 million units by 2017, up from less than 60 million units in 2011 according to a recent report by DisplaySearch.

By comparison, worldwide sales of personal computers (which includes desktops, laptops and netbooks) in 2010 were 350 million and are expected to reach 364 million units in 2011.