Double sided/double density; 98 tpi; also known as quad density; 1 megabyte unformatted capacity; write protect; hub ring.
A round flat item which is used as a storage media, it is rotated in order to read or write data on one or both sides. The item may have a magnetic coating and be stored in a paper/plastic envelope, or it may be designed as an optical storage media with pits on a reflecting surface that are served by means of an optical device or a laser beam. For preprogrammed disk, flexible, see disk program, automatic data processing.
NSN 5950-01-043-7857
NSN 6220-01-608-5611
NSN 6105-01-041-4672
NSN 5990-00-193-3028
NSN 6130-01-041-9509
NSN 5998-01-232-1970
NSN 6220-01-071-9428
NSN 6130-01-081-1714
NSN 5915-01-573-5980
NSN 5920-01-425-2336
NSN 6105-01-106-3221
NSN 5950-01-345-2968