This system, the first of its type, represents a significant advance in the art of information retrieval. It is a complete random access audio system for a learning resources center. Computer controlled magnetic tape units, organized for high-speed duplication, permit rapid access and playback of any of hundreds of master programs. Features include individual student control of both playback and recording, programs which always start at the beginning, a maximum waiting time of less than 60 seconds for any number of users, a small integrated control/display unit which can be located rmotely in classrooms and other buildings, and telephone interconnections to permit outside calling. The number of programs and student positions is limited only by the space available and by cost considerations.
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