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Automated storage and retrieval systems
Automated storage and retrieval systems (often abbreviated to ASRS or AS/RS) refers to a variety of computer-controlled methods for automatically depositing and retrieving loads from defined storage locations. Systems of this nature have been used for years in manufacturing and warehouse facilities.
ASRS technology is just beginning to be used in large libraries, particularly at universities. It is used mostly to retrieve seldom-used books and periodicals that are kept in storage vaults. It works via a robotic "arm" that quite literally fetches materials from archival locations.