Modernize and expand the description of what a disk / storage device is

in an effort to make it more general and less confusing at the same time.
This commit is contained in:
Giorgos Keramidas 2003-03-31 21:23:06 +00:00
parent 21ad6bd14a
commit eec422a274
Notes: svn2git 2020-12-08 03:00:23 +00:00
svn path=/head/; revision=16414

View file

@ -116,12 +116,16 @@ now. -->
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<para>disk: A circular disc, covered with magnetic or <para>disk: Hard disks, CDROMs, magneto-optical devices and
similarly manipulable material, spun by a motor under a Zip/Jazz removable media are example of storage devices
head. Data is stored on the disk by changing the pattern commonly used today. The basic principle of the way these
of magnetism on the disc, which can be later read. Hard work is that one or more spinning disks spin by a motor,
disks, CDROMs, Magneto-optical,and Zip/Jaz removables are while a head, moving on a radial path close to the disks,
examples of disks.</para> reads from or writes data to the disk. Writing is done by
modifying some physical properties of the disk (magnetic
flow, reflectivity, etc.) while reading is done by
<quote>detecting</quote> changes to the same physical
properties of the disk.</para>
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