Share on Facebook Share on Twitter Email
Answers.com

Double density

 
Sci-Tech Dictionary: double density
(′dəb·əl ′den·səd·ē)

(computer science) Property of a computer storage medium that holds twice as much data per unit of storage space as the standard; applied particularly to floppy disks.


Search unanswered questions...
Enter a question here...
Search: All sources Community Q&A Reference topics
Computer Desktop Encyclopedia: double density
Top

Twice the capacity of the prior format. Yesterday's double density can be today's low density (see DD).

Download Computer Desktop Encyclopedia to your iPhone/iTouch

Business Dictionary: Double Density
Top

Though originally a designation of the Format of a Floppy Disk that put twice as many Bits into a given area as the single-density format, double density is now the lowest density commonly found; for most IBM-compatible computers, double density means 360K on a 5.25-inch disk and 720K on a 3.5-inch disk. See also High Density.

Wikipedia: Double density
Top

Double density, often shortened DD, is a capacity designation on magnetic storage, usually floppy disks. It describes the use of an encoding (or modulation) of information, which can encode on average twice as many bits per time unit compared to single density. This is achieved by using MFM instead of FM.

Floppy disk drives have been using this method since 1978 with the introduction of the 360 KiB (MS-DOS FAT size) drives.

The early hard disks also used this encoding, but was replaced by the more efficient RLL method.


Translations: Double-density
Top

Dansk (Danish)
adj. - dobbeltkapacitets-, double density-, med dobbelt lagringstæthed

idioms:

  • double-density disk    double density diskette, diskette med dobbelt lagringstæthed

Français (French)
adj. - (Comput) double densité

idioms:

  • double-density disk    (Comput) disque double densité

Deutsch (German)
adj. - (Comp.) mit doppelter Dichte

idioms:

  • double-density disk    Doppeldichtedisk

Ελληνική (Greek)
adj. - (για δισκέτα Η/Υ) διπλής πυκνότητας εγγραφής

idioms:

  • double density disk    δισκέτα διπλής πυκνότητας εγγραφής

Español (Spanish)
adj. - doble densidad

idioms:

  • double-density disk    disquete de doble densidad

Svenska (Swedish)
adj. - dubbeltät

中文(简体)(Chinese (Simplified))
双密度的

idioms:

  • double-density disk    双密度磁盘

中文(繁體)(Chinese (Traditional))
adj. - 雙密度的

idioms:

  • double-density disk    雙密度磁片

한국어 (Korean)
adj. - 2중 밀도의

עברית (Hebrew)
adj. - ‮בעל תכולה כפולה לעומת דיסקים ישנים יותר באותו גודל (דיסק מחשב)‬


 
 

 

Copyrights:

Sci-Tech Dictionary. McGraw-Hill Dictionary of Scientific and Technical Terms. Copyright © 2003, 1994, 1989, 1984, 1978, 1976, 1974 by McGraw-Hill Companies, Inc. All rights reserved.  Read more
Computer Desktop Encyclopedia. THIS DEFINITION IS FOR PERSONAL USE ONLY.
All other reproduction is strictly prohibited without permission from the publisher.
© 1981-2010 The Computer Language Company Inc.  All rights reserved.  Read more
Business Dictionary. Dictionary of Business Terms. Copyright © 2000 by Barron's Educational Series, Inc. All rights reserved.  Read more
Wikipedia. This article is licensed under the Creative Commons Attribution/Share-Alike License. It uses material from the Wikipedia article "Double density" Read more
Translations. Copyright © 2007, WizCom Technologies Ltd. All rights reserved.  Read more