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Q: Computer/Physics Question ( Answered,   0 Comments )
Question  
Subject: Computer/Physics Question
Category: Computers > Hardware
Asked by: bigdude232000-ga
List Price: $2.00
Posted: 28 Sep 2004 12:08 PDT
Expires: 28 Oct 2004 12:08 PDT
Question ID: 407528
Under current storage technology for computer hard drives, how many
atoms are used to store one bit?
Answer  
Subject: Re: Computer/Physics Question
Answered By: denco-ga on 28 Sep 2004 14:22 PDT
 
Howdy bigdude232000-ga,

Obviously, the number is going to vary widely, but it takes a range is from
1 million to "millions" of atoms to store one bit on current hard drives.

You will need Acrobat Reader to read, etc. the following document. If you do
not have it, you can download it free from the Adobe web site.
http://www.adobe.com/products/acrobat/readstep2.html

From a 2000 Research Centre Jülich report.
http://www.fz-juelich.de/oea/JB-2000-englisch.pdf

"For comparison: on present hard disks a bit is represented by a magnetized
sector on the hard disk comprising about 100,000,000 atoms."

From a 2002 InfoSatellite.com article titled "One atom One bit" by Pedro
Gomes.
http://www.infosatellite.com/news/2002/09/p200902atom_bit.html

"Current hard drives use millions of atoms to store each individual bit
of information."

From a 2002 Small Times article by By Mark Halper of the "Sunday Business,"
London.
http://www.smalltimes.com/document_display.cfm?document_id=5151

"An atom is 1 million times smaller than the magnetic bits that spin in PC
hard drives ..."

From a 2004 ActionFront Data Recovery Labs Inc. web site article.
http://www.actionfront.com/ts_whitepaper.asp

"Briefly, there may be millions of atoms that are magnetically oriented in
a certain direction in one bit."

If you need any clarification, feel free to ask.


Search strategy:

Google search on: atoms bit "hard drive" million OR millions
://www.google.com/search?q=atoms+bit+%22hard+drive%22+million+OR+millions

Looking Forward, denco-ga - Google Answers Researcher
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