Floppy drives, magnetic

In general, it is most efficient for the microprocessor to access and store in the semiconductor main memory (DRAM) alone because the DRAM access time is < 100 ns. However, DRAM is volatile and any information in the DRAM is lost once the computer is turned off. Thus, lower level of information storage devices is essential. The latter may include magnetic hard disc, magnetic floppy drives, etc. As a rule, the higher-level storage media are... 

There is no competitive situation for data storage disks with embossed iaformation (CD-ROM) and recordable/nonerasable disks (WORM) no counterpart to CD-ROM and WORM exists among magnetic memories. EOD drives are best compared to floppies and removable hard disk media given their possibiUty of easy and problem-free disk exchange and a capacity on the order of that of removable magnetic media (Tape, Bernoulli, SyQuest). 

Section IV deals with the application of electrochemical technologies to magnetic-storage devices. In the field of magnetic information storage, hard discs, floppy discs, and tape drives are widely used. Electrochemical deposition techniques are essential in their production and this is the raison d etat for its inclusion in this chapter. 

Magnetic Coatings. Videotapes, cassettes, floppy discs, and zip drives are all now technologically obsolete, but they have one thing in common They used... 

Early versions of home computers also had magnetic tape drives as a secondary method of data storage. In the 1970 s, IBM offered their own version of a magnetic cassette tape recorder (compatible with its desktop computer) that used the widely available cassette tape. By 1985, however, hard disks and floppy disks had dominated the market for computer systems designed to access smaller amounts of data frequently and quickly, and cassette tapes became obsolete for home-computer data storage. 

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