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 6240-01-653-9921
NSN 6620-00-025-1889
NSN 5985-00-617-7702
NSN 5998-01-580-0758
NSN 5985-00-983-4751
NSN 5990-01-374-3877
NSN 5915-01-442-6484
NSN 6105-00-707-2743
NSN 5905-00-375-6342
NSN 6240-01-463-8276
NSN 5990-01-290-4787
NSN 6645-01-443-4854