Future
There may be active research to make computers out of many
promising new types of technology, such as optical computers , DNA computers ,
neural computers , and quantum computers . Most computers are universal, and
are able to calculate any computable function , and are limited only by their
memory capacity in addition to operating speed. However different designs of
computers can give very different performance for particular problems; for
example quantum computers can potentially break some modern encryption
algorithms (by quantum factoring ) very quickly.
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