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DNA
molecules are ready-made computers, and researchers
have been trying to make them do useful tasks
in addition to their usual job of creating
life. One problem has been figuring out how
to make the molecules do more than one computational
step at a time. A new approach makes it possible
to program a series of steps, than let the
molecules do the rest.
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Device
would boost quantum messages
Researchers have already figured out how to use
the weird properties of quantum physics to send
perfectly secure messages, but they can't send them
very far. A proposed signal booster could make it
possible to send airtight secrets long distance.
Virtual
computers reconfigure on the fly
It's hard enough to piece together virtual computers
from resources all around the Net. But what do you
to when some of those resources disappear in the
middle of a complex scientific computation?
Software
sorts video soundtracks
Being able to distinguish among speech, music and
background noise is child's play for humans, but
computers need a little help figuring out that a
drum roll isn't rolling thunder.
Bigger
disks won't hit quantum barrier
It looks like the weird laws of quantum physics
won't slow down efforts to increase disk drive density
anytime soon. And the theoretical maximum amount
of data that can be crammed into a square centimeter
of magnetic disk space looks to be about 42 terabits.
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