Double density definitions

Double density

1) Computer storage medium
Found on https://www.crosswordclues.com/clue/double-density

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Double density

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 me...
Found on http://en.wikipedia.org/wiki/Double_density

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Double density

discs that can store approximately 800Kb of data when formatted
Found on http://www.archivemag.co.uk/

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Double density

A method of recording on floppy disks using a modified frequency modulation process that allows more data to be stored on a disk.
Found on http://www.encyclo.co.uk/local/20829

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Double Density

A method of recording electronically (disk, CD, floppy) using a modified frequency to allow more data storage.
Found on https://www.encyclo.co.uk/local/20631

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