7
:
.
́ ́ ́ (. hard (magnetic) disk drive, HDD, HMDD), , ́ ( ) , .
1. .
( ) , , . . , . ( 10 ), . , .
2. Ƹ , .
-
, . .
, ( ), , ( 3).
3.
, . . . . .
, FM, MFM RLL.
FM (Frequency Modulation). . , "0" .
RLL (Run LengM Limited), , FM-. . RLL. RLL 2,7: , , . RLL, .
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/ . , , ( ). "". , , (Cylinder), .
, , . , "" 0,080,5 . , , , . . , , , .
, , . : 25 , . / . "", .
( ) /. , .
. , . ( ) , , . , , .
, . , . . . , . , .
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( 2 ) (T-cal), . .
PC . A/V-, .
(sweep) .
, PC , , , . Landing Zone L-Zone. .
, . , . . , , .
, , . . , ( 4).
4.