The item is a removable module containing a miniaturized electronic circuit, mass-produced on a tiny chip or wafer of silicon, designed to provide additional processing or memory capacity to a computer. The item is a removable module containing one or more nonmagnetic discs used to store digital data. The item is a removable module, somewhat like an audio cassette, that contains magnetic tape that can be written on and read from by a tape drive. The item is a removable spool containing magnetic tape that can be written to and read from by a tape drive. The item is a digital information storage medium usually consisting of a thin Mylar disk coated with a magnetic material that permits the recording of data.
Magnetic disks come in various sizes.
They are also known as computer diskettes or disks and floppy diskettes or disks. The disc is written to and read from using a laser beam used to heat the recording surface to a point at which regions of the surface of the disk become magnetically aligned to store bits of data. Recorded data is read optically. These discs are usually read-only. Frequently this involves a computer network connection.