August 2011
Intermediate to advanced
312 pages
12h 13m
English
Content preview from Digital Storage in Consumer Electronics
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Fundamentals of Hard Disk Drives 29
www.newnespress.com
circuit board of a hard disk drive turns data into signals that are written on the hard
disk drive or takes the electronic signals from the read sensors and turns it into digital
data for the device using the hard disk drive.
2.2 Hard Disk Magnetic Recording Basics
Hard disk drives record information on a magnetic layer laid down on the aluminum
or glass disk substrate. A write element in the head projects a magnetic fi eld into the
magnetic recording layer that is high enough to change the prior magnetic state. As the
digital information is written, the head fi eld reverses in orientation, ...
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