A floppy disk is a data storage device that is composed of a disk of thin, flexible (“floppy”) magnetic storage medium encased in a square or rectangular plastic shell.
Floppy disks are read and written by a floppy disk drive or FDD, the latter initialism not to be confused with “fixed disk drive”, which is an old IBM term for a hard disk drive.
Once popular and now seldom used, it is recommended that all materials be burned to a CD.