3M's 8-inch floppy disks were one of the early magnetic disk media widely used in business computers and workstations from the 1970s to the 1980s. ◎ Basic Specifications - Size: 8 inches in diameter (approx. 20cm) - Recording Method: - Double-Sided Double-Density (DSDD): approx. 985KB - Format: CP/M, IBM 3740, DEC, etc., varies depending on the system ◎ Features of 3M Products - High-quality magnetic material: 3M has strengths in magnetic tape technology, and that know-how is utilized in floppy disks. - Durability and stability: Relatively strong for long-term storage. ◎ Main Applications and Compatible Devices - Large word processors - Minicomputers (DEC PDP series, etc.) - Business terminals (NEC, Fujitsu, Hitachi general-purpose machines)