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The Computer Journal 1973 16(2):106-110; doi:10.1093/comjnl/16.2.106
© 1973 by British Computer Society
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Computer usage control

M. M. Lehman *

Department of Computing and Control, Imperial College, London, UK

CASCOM is a system of administrative procedures and accounting programs that together comprise an integrated multiple-computer, multiple operating systems, pricing and usage control mechanism. The original version described in this paper, was implemented in APL/360 with full interactive capabilities. It has been followed by a non-interative, PL/I, version. The latter has been in full, closed-loop, operation at the IBM Research Division Laboratory, Yorktown Heights, since February, 1972.

The paper discusses the philosophy underlying CASCOM, outlines its functional specification and briefly discusses the implementations. Operational experience is however not included.

Received February 1972.

* Department of Computing and Control, Imperial College, London SW7 2BT


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