By Letter: Non-alphabet | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
  Email this page to a friend


Modified Frequency Modulation




<storage> (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Except for 1.44 MB floppy disks, this encoding is obsolete.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.



< Previous Terms Terms Containing Modified Frequency Modulation Next Terms >
Modelsim
Model View Controller
modem
MODEM7
moderator
MFM
Run Length Limited
modifier
M O drive
MODSIM
MODSIM II
Modula


Web Standards & Support:

Link to and support eLook.org Powered by LoadedWeb Web Hosting
Valid XHTML 1.0!Valid CSS!eLook.org FireFox Extensions