Recording Medium

A recording medium is a physical material that holds information expressed in any of the existing recording formats. Ancient examples:
  • papyrus
  • paper (painted or written with a pencil). Today paper is mainly produced from wood pulp, in ancient times, old clothes were used. "Modern paper" was invented in France around the 14th century.
  • clay and stone (carved or incised)
  • wax tablets
  • chalk
  • quipu
Examples since the 19th century include:
  • photographic film
  • wax for recording cylinders
  • "shellac" compound and later vinyl for analog disk records
  • plastic sheet for Dictaphone recorders
  • steel wire for magnetic wire recorders
  • magnetic tape
  • rigid magnetic disks and cylinders
  • floppy magnetic disks
  • pressed optical media for CDs and DVDs
  • write-once, read-many optical media for writable CDs and DVDs
  • read-write optical media for rewritable CDs and DVDs
  • flash memory media

 

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