Single density, often shortened SD, is a capacity designation on magnetic storage, usually floppy disks. It describes the use of an encoding (or modulation) of information using Frequency modulation, also known as biphase mark code.
Early floppy disk drives used this method, but they are now obsolete. It was quickly replaced by double density floppy drives using modified frequency modulation (MFM).
Read more about Single Density: See Also
Famous quotes containing the word single:
“I believe that the fundamental proposition is that we must recognize that the hostilities in Europe, in Africa, and in Asia are all parts of a single world conflict. We must, consequently, recognize that our interests are menaced both in Europe and in the Far East.”
—Franklin D. Roosevelt (1882–1945)
Related Phrases
Related Words