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Microsoft launches Windows 8

Microsoft is launching its Windows 8 operating system. The product is expected to be aimed at the growing tablet computer market.

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Windows 8 is 'computing for the next billion people'

Steven Sinofsky, Microsoft's head of Windows has announced that Windows 7 has been installed 670 million times.

He says that Windows 8 is "computing for the next billion people", and sees it as a shift from the old age of desktops to the age of touchscreens, smartphones, and social networking.

"Windows 8 is simply the best release of Windows ever," he said.

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