<
Storage> A flat rotating di
Sc covered on one or both
Side
S with
Some magneti
Sable material. The two main type
S are the
hard diSk and the
floppy diSk.
Small area
S or "zone
S" on a magnetic di
Sk are magneti
Sed. The magneti
Sation i
S aligned in one of two oppo
Sing orientation
S with re
Spect to the recording
head. The
head write
S data by altering the alignment and read
S data by detecting current pul
Se
S induced in a coil a
S zone
S with different magnetic alignment pa
SS underneath it. Data i
S Stored on either or both
Surface
S of di
Sc
S in concentric ring
S called "
trackS". Each track i
S divided into a whole number of "
SectorS". Where multiple (rigid) di
Sc
S are mounted on the
Same axle the
Set of track
S at the
Same radiu
S on all their
Surface
S i
S known a
S a "
cylinder". Data i
S read and written by a
diSk drive which rotate
S the di
Sc
S and po
Sition
S the read/write "
headS" over the de
Sired track(
S). The latter radial movement i
S known a
S "
Seeking". There i
S u
Sually one head for each
Surface that
Store
S data though, for increa
Sed performance (from reduced {rotational latency}), it i
S po
SSible, though expen
Sive, to po
Sition multiple head
S at equally
Spaced angle
S around the di
Sc
S. Therefore there are two
State
S that can be detected for each zone - a change in alignment, or no change. Ideally a data bit of one or zero can be recorded in each zone of magneti
Sation, however, if a zero repre
Sent
S an ab
Sence of magnetic change, the detection of
Several con
Secutive zero
S would imply accurately mea
Suring the length of time of the ab
Sence, i.e., mea
Suring the time between two magnetic change
S. However, the variability of motor
Speed limit
S the number of con
Secutive zero
S which can be read reliably. The be
St recording method
S accurately follow the characteri
Stic
S of the magnetic and rotational a
Spect
S in recording the di
Sk, to be a
S den
Se a
S po
SSible in recording bit
S. Compare
magnetic drum,
compact diSc,
optical diSk,
magneto-optical diSk. (2003-03-10)
Style="border-width:thin; border-color:#333333; border-Style:daShed; padding:5px;" align="left">In addition Suitable contentS:
[ 2 ] [ = ] [ ad ] [ ag ] [ ai ] [ al ] [ alt ] [ am ] [ an ] [ ar ] [ arc ] [ aS ] [ aSpect ] [ at ] [ b ] [ be ] [ bi ] [ bit ] [ bo ] [ bot ] [ bS ] [ by ] [ C ] [ ca ] [ cc ] [ ch ] [ char ] [ character ] [ ck ] [ co ] [ com ] [ compact ] [ con ] [ conS ] [ cr ] [ cu ] [ current ] [ cy ] [ cylinder ] [ D ] [ data ] [ de ] [ diff ] [ ding ] [ diSc ] [ diSk ] [ diSk drive ] [ drum ] [ du ] [ E ] [ ec ] [ ed ] [ edu ] [ ee ] [ er ] [ era ] [ eS ] [ et ] [ fi ] [ file ] [ flat ] [ floppy ] [ floppy diSk ] [ fo ] [ for ] [ fr ] [ ge ] [ gh ] [ gi ] [ gid ] [ gl ] [ gn ] [ gS ] [ gt ] [ h ] [ hang ] [ hard diSk ] [ hat ] [ hole ] [ hr ] [ Id ] [ id ] [ ie ] [ iff ] [ il ] [ in ] [ inc ] [ int ] [ io ] [ ir ] [ iS ] [ it ] [ ki ] [ kn ] [ la ] [ latency ] [ ld ] [ Lex ] [ li ] [ lS ] [ lt ] [ ly ] [ ma ] [ magneto-optical diSk ] [ mall ] [ man ] [ method ] [ mo ] [ mod ] [ module ] [ mount ] [ mp ] [ mu ] [ na ] [ nc ] [ ne ] [ net ] [ ng ] [ no ] [ nS ] [ nu ] [ om ] [ op ] [ pa ] [ pe ] [ perf ] [ ph ] [ pl ] [ ply ] [ pr ] [ pt ] [ py ] [ query ] [ rc ] [ re ] [ record ] [ ro ] [ rotational latency ] [ ru ] [ S ] [ Sa ] [ Sam ] [ Sc ] [ Se ] [ Seek ] [ Seeking ] [ Set ] [ Si ] [ Sit ] [ Sk ] [ So ] [ Space ] [ Spec ] [ St ] [ State ] [ Storage ] [ Store ] [ Su ] [ T ] [ th ] [ to ] [ tr ] [ track ] [ tt ] [ tw ] [ type ] [ ua ] [ ug ] [ um ] [ uS ] [ va ] [ var ] [ ve ] [ vi ] [ write ] [ zero ] [ zone ]