In Pictures: Greatest comebacks in tech history

Knocked flat and left for dead -- these 10 technologies and companies turned around their fate with historic flair

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Greatest tech comeback No. 7: Computer time-sharing Remember when computing meant typing commands on a keyboard attached to a terminal, with the processing power and data residing in some chilled room far from your desk? If that seems like only yesterday, that's because it was only yesterday. Virtualization and cloud computing represent computer time-sharing 2.0, only instead of dumb boxes that communicate with mainframes, we use smart devices that communicate with server farms. Having your software and data reside on a single machine you have to carry with you? That's so quaint.

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In Pictures: Greatest comebacks in tech history

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