Top 5 manufacturers of tablet computers in 2011

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In producing its own tablet computer called Surface, Microsoft Corp. is entering a market dominated by Apple Inc. Six out of every 10 tablets shipped are iPads, according to research firm IHS iSuppli.
Here are the top five manufacturers of tablets last year:
Apple Inc., maker of the iPad, 40.5 million shipped worldwide, 62 per cent share
Samsung Electronics Co., maker of Galaxy line, 6.1 million, 9 per cent.
Amazon.com Inc., maker of Kindle Fire, 3.9 million, 6 per cent