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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