Information Technology Reference
In-Depth Information
programmable. read-only. memory.*. This. means. that. there.
are.no.moving.parts.and.it.stores.data.by.changing.the.state.
of.the.many.electronic.transistors.to.represent.either.a.one.
or.a.zero..The.data.are.read-only,.but.the.device.can.be.elec-
tronically.erased.and.then.reprogrammed.with.new.data.
USB.lash.drives.are.perhaps.the.best-known.use.of.this.
storage. technology. today,. but. as. noted. above,. it. is. used.
extensively.and.is.becoming.very.popular.
Forensically.gathering.data.from.one.of.these.drives.can.be.
a.challenge.because.when.they.are.“erased”.there.is.nothing.
left.behind.as.there.is.on.a.mechanical.hard.disk.or.loppy.disk.
drive..There.are.no.telltale.traces.or.pieces.of.data.that.can.be.
patched.together.to.try.to.ind.deleted.or.corrupted.data..When.
a.lash.drive.is.“lashed,”.it.is.completely.wiped.clean.in.prepara-
tion.for.more.data.
In. recent. evolutions. of. this. technology. it. is. possible. to.
erase.parts.of.the.data.and.preserve.parts.without.completely.
wiping.the.entire.device,.but.the.data.that.are.wiped.are.still.
unrecoverable.unless.stored.in.another.location.
That. is. why. many. of. the. newer. devices. such. as. smart.
phones.and.tablets.rely.on.online.or.cloud.storage.as.a.way.
to. back. up. and. recover. their. data.. Often. those. archives. of.
data.are.the.only.recourse.if.you.have.a.device.using.solid-
state.memory.storage.that.is.corrupted.or.erased..Keep.this.
in.mind.if.you.need.data.from.one.of.these.new.devices,.and.
be.ready.to.ind.the.backup.resource.if.necessary.
3.14 DESKTOP COMPUTER FACTS
In. this. section. we. sum. it. all. up. by. discussing. the. desktop.
computer.that.most.of.us.spend.a.majority.of.our.time.work-
ing.with.
In.our.discussion.of.servers.and.mobile.devices.we.spent.
quite.a.bit.of.time.looking.at.the.engineering.and.mechanics.
*. howstuffworks,.Jeff.Tyson,.How.Flash.Memory.Works:.http://electronics.how-
stuffworks.com/lash-memory.htm..Retrieved.2011-02-21.
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