external storage devices
External storage devices are used to record and store information. You can do this using virtually any form of energy and can be recorded onto magnetic tape (such as film), optical discs (such as CDs or DVDs) or other devices (such as USBs).
References: Information and Software Technology (by David Grover)
http://en.wikipedia.org/wiki/External_storage
References: Information and Software Technology (by David Grover)
http://en.wikipedia.org/wiki/External_storage
Some examples of external storage devices are: