Machine-readable medium
（重定向自Computer readable）
![ISBN represented as EAN-13 bar code showing both machine-readable bars and human-readable digits](/Images/godic/202501/05/EAN-13-ISBN-13.svg4007.png")
In telecommunications and computing a machine-readable medium (automated data medium) is a medium capable of storing data in a format readable by a mechanical device (rather than human readable).
Examples of machine-readable media include magnetic media such as magnetic disks, cards, tapes, and drums, punched cards and paper tapes, optical disks, barcodes and magnetic ink characters.