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 6105-01-566-4419
NSN 6110-01-479-5079
NSN 7035-00-371-7749
NSN 5985-01-449-4615
NSN 5910-01-123-8238
NSN 6150-00-617-1989
NSN 5910-01-312-8101
NSN 5975-00-160-2407
NSN 5920-01-494-9401
NSN 5930-00-734-6138
NSN 6145-00-296-0085
NSN 6620-01-502-9104