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 5975-01-208-2714
NSN 2925-01-136-2551
NSN 5920-01-450-8382
NSN 5855-00-014-5008
NSN 4140-00-403-1267
NSN 5990-01-453-3552
NSN 5910-01-085-5763
NSN 5950-00-528-4423
NSN 6240-01-158-0402
NSN 6320-01-334-9840
NSN 6135-01-268-7056
NSN 6110-01-473-9550