Being Parallel: How Associative Holographic Memories May One Day Deliver Optical Computing

There's more to data storage than storing data: being able to get the right information out when it's needed is crucial. As databases have expanded from thousands of records to millions and from alpha-numeric to multimedia, searching has become a growing problem. Since all the information is stored and accessed serially, finding by their content (rather than their location) can be a long, slow process.

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