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The "Start" icon is displayed on a Microsoft
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The "Start" icon is displayed on a Microsoft Corp. Surface tablet computer during an event in New York, U.S., on Thursday, Oct. 25, 2012. Microsoft Corp. will be constrained in a contest against Apple Inc. in the market for handheld computers by unveiling a tablet that doesn't work with some of the most widely used downloadable applications. (Oct. 25, 2012)(Credit: Bloomberg )

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Microsoft Windows 8 launch

Microsoft launched a radical redesign of its world-dominating Windows operating system on Oct. 25, 2012, introducing a touch-enabled interface that attempts to bridge the gap between personal computers and mobile devices.