Systems transfer or transform materials, energy or information - and usually all three. An information system is one whose prime function is to trans… - Brian Campbell Vickery

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Systems transfer or transform materials, energy or information - and usually all three. An information system is one whose prime function is to transfer or transform information: the telephone system is an obvious example. This book concentrates on certain types of information system: those concerned with the transfer of information between specialists, mainly with reference to their work, and mainly based on documents. The focus is thus on specialised documentary information systems.