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Random factor

Cleared and programmed ‘in a flash’, non volatile memory was never to be the same. By Vanessa Knivett.

Billed as a super hero, flash memory did indeed seem to live up to its reputation, issuing in a new generation of portable electronics. Instantly the technology was attractive to a wide range of applications, but it is the cell 'phone market which has become the major user.

Named for its ability to be erased 'in a flash', there are two types - nor and nand. Nor technology offers high speed random access and byte programming, it can support direct random access to any location on every cycle.

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Graham Pitcher

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