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 6320-01-290-5271
NSN 6685-01-100-3012
NSN 5855-01-236-9645
NSN 6240-01-429-9002
NSN 6135-01-136-5498
NSN 2925-00-295-4765
NSN 5998-01-043-4270
NSN 6240-01-074-5504
NSN 6610-00-078-9620
NSN 6610-01-033-1748
NSN 5895-01-291-9952
NSN 5985-01-146-8465