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- Modified_Frequency_Modulation abstract "Modified Frequency Modulation, commonly MFM, is a run-length limited (RLL) coding scheme used to encode the actual data-bits on most floppy disks. It was first introduced in disk drives with the IBM 3330 hard disk drive in 1970. Floppy disk drive hardware examples include Amiga, most CP/M machines as well as IBM PC compatibles.MFM is a modification to the original FM (frequency modulation) scheme for encoding data on single-density floppy disks and some early hard disk drives. Due to the minimum spacing between flux transitions that is a property of the disk and head design, MFM, which guarantees at most one flux transition per data bit, can be written at higher density than FM, which can require two transitions per data bit. It is used with a data rate of 250 – 500 kbit/s (500 – 1000 kbit/s encoded) on industry standard 5¼\" and 3½\" ordinary and high density diskettes. MFM was also used in early hard disk designs, before the advent of more efficient types of run-length limited coding. Except for the steadily disappearing 360kiB/1.2MiB (5.25\") and 720~880kiB/1.4~1.6 MiB (3.5\") floppy disk formats, MFM encoding is obsolete in magnetic recording.".
- Modified_Frequency_Modulation wikiPageID "383902".
- Modified_Frequency_Modulation wikiPageLength "6876".
- Modified_Frequency_Modulation wikiPageOutDegree "18".
- Modified_Frequency_Modulation wikiPageRevisionID "694665861".
- Modified_Frequency_Modulation wikiPageWikiLink Amiga.
- Modified_Frequency_Modulation wikiPageWikiLink M.
- Modified_Frequency_Modulation wikiPageWikiLink Category:Line_codes.
- Modified_Frequency_Modulation wikiPageWikiLink Category:Rotating_disc_computer_storage_media.
- Modified_Frequency_Modulation wikiPageWikiLink Data_rate_units.
- Modified_Frequency_Modulation wikiPageWikiLink Floppy_disk.
- Modified_Frequency_Modulation wikiPageWikiLink Frequency_modulation.
- Modified_Frequency_Modulation wikiPageWikiLink Group_code_recording.
- Modified_Frequency_Modulation wikiPageWikiLink Hard_disk_drive.
- Modified_Frequency_Modulation wikiPageWikiLink Hexadecimal.
- Modified_Frequency_Modulation wikiPageWikiLink History_of_IBM_magnetic_disk_drives.
- Modified_Frequency_Modulation wikiPageWikiLink IBM_PC_compatible.
- Modified_Frequency_Modulation wikiPageWikiLink Logical_NOR.
- Modified_Frequency_Modulation wikiPageWikiLink Non-return-to-zero.
- Modified_Frequency_Modulation wikiPageWikiLink Run-length_limited.
- Modified_Frequency_Modulation wikiPageWikiLinkText "MFM".
- Modified_Frequency_Modulation wikiPageWikiLinkText "Modified Frequency Modulation".
- Modified_Frequency_Modulation wikiPageWikiLinkText "Modified Frequency Modulation#MMFM".
- Modified_Frequency_Modulation wikiPageUsesTemplate Template:FOLDOC.
- Modified_Frequency_Modulation wikiPageUsesTemplate Template:Merge.
- Modified_Frequency_Modulation wikiPageUsesTemplate Template:Reflist.
- Modified_Frequency_Modulation wikiPageUsesTemplate Template:See_also.
- Modified_Frequency_Modulation subject Category:Line_codes.
- Modified_Frequency_Modulation subject Category:Rotating_disc_computer_storage_media.
- Modified_Frequency_Modulation hypernym Scheme.
- Modified_Frequency_Modulation type Organisation.
- Modified_Frequency_Modulation type Encoding.
- Modified_Frequency_Modulation type Protocol.
- Modified_Frequency_Modulation type Redirect.
- Modified_Frequency_Modulation type Thing.
- Modified_Frequency_Modulation comment "Modified Frequency Modulation, commonly MFM, is a run-length limited (RLL) coding scheme used to encode the actual data-bits on most floppy disks. It was first introduced in disk drives with the IBM 3330 hard disk drive in 1970. Floppy disk drive hardware examples include Amiga, most CP/M machines as well as IBM PC compatibles.MFM is a modification to the original FM (frequency modulation) scheme for encoding data on single-density floppy disks and some early hard disk drives.".
- Modified_Frequency_Modulation label "Modified Frequency Modulation".
- Modified_Frequency_Modulation seeAlso MFM.
- Modified_Frequency_Modulation sameAs Q1942166.
- Modified_Frequency_Modulation sameAs Modified_Frequency_Modulation.
- Modified_Frequency_Modulation sameAs Modified_Frequency_Modulation.
- Modified_Frequency_Modulation sameAs Modified_Frequency_Modulation.
- Modified_Frequency_Modulation sameAs Modified_Frequency_Modulation.
- Modified_Frequency_Modulation sameAs Zmodyfikowana_modulacja_częstotliwości.
- Modified_Frequency_Modulation sameAs Modified_Frequency_Modulation.
- Modified_Frequency_Modulation sameAs m.021yx1.
- Modified_Frequency_Modulation sameAs MFM-кодирование.
- Modified_Frequency_Modulation sameAs Modified_Frequency_Modulation.
- Modified_Frequency_Modulation sameAs Q1942166.
- Modified_Frequency_Modulation wasDerivedFrom Modified_Frequency_Modulation?oldid=694665861.
- Modified_Frequency_Modulation isPrimaryTopicOf Modified_Frequency_Modulation.