Science Fair Project Encyclopedia
Data storage device
In computing, a data storage device—as the name implies—is a device for storing data. It usually refers to permanent (non-volatile) storage, that is, the data will remain stored when power is removed from the device; unlike semiconductor RAM. Recording can be done mechanically, magnetically, or optically.
A typical way to classify data storage media is to consider its shape and type of movement (or non-movement) relative to the read/write device(s) of the storage apparatus. The following is a list of storage media, roughly sorted descending from modern to older/archaic media.
- Flash memory/memory card (solid state semiconductor memory)
- Magnetic bubble memory
- Disk storage (flat, round, circularly-spinning object)
- Tape storage (long, thin, flexible, linearly moving bands)
- Paper card storage
- Punched card (mechanical)
See also: computer storage
- Bekenstein, Jacob D. (2003, August). Information in the holographic universe. Scientific American.
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