翻訳と辞書
Words near each other
・ modef
・ model
・ model checking
・ model view controller
・ modeling
・ modelling
・ modelsim
・ modem
・ modem7
・ moderator
modified frequency modulation
・ modifier
・ modsim
・ modsim ii
・ modula
・ modula-2
・ modula-2*
・ modula-2+
・ modula-3
・ modula-3*


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modified frequency modulation : FOLDOC
Modified Frequency Modulation
(MFM, Modified FM, or sometimes "Multiple Frequency Modulation") A modification to the original frequency modulation scheme for encoding data on magnetic disks. MFM allows more than 1 symbol per flux transition (up to 3), giving greater density of data. It is used with a data rate of between 250-500 kbit/s on industry standard 3.5" and 5.25" low and high density {diskettes}, and up to 5 Mbit/s on ST-506 hard disks. Except for 1.44 MB floppy disks, this encoding is obsolete.
Other data encoding schemes include GCR, FM, RLL. See also: PRML.
(2002-06-24)



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