16. Which is a secondary memory device? A. CPU B. ALU C. Floppy disk D. Mouse E. None of the above
Floppy Disk : A floppy disk, also known as a floppy, diskette, or simply disk, is a type of disk storage composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles. Floppy disks are read and written by a floppy disk drive (FDD).
