ASSIGNMENT OF RELIABILITY NORMS FOR THE INDIVIDUAL UNITS OF A DIGITAL COMPUTER IN THE INITIAL DESIGN STAGE OF AGREEING ON THE TACTICAL-TECHNICAL DESIGNATION,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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Two approaches are analyzed for achieving the efficient assignment of reliability norms to the various units of a digital computer, e.g., the arithmetic unit AU, the control unit CU, and the main memory unit MU. The problem consists in finding the failure rate of these units which will satisfy a given probability of machine failure QT in time T. In the first approach the approximate failure rates are expressed as functions of the complexity of units and the relative failure rates of the components. A more realistic view of the failure rates of the units must take into account their manufacturing and operating costs. The authors derive an expression for finding the failure rate of individual units for which the cost of a unit is minimum taking into account the cost of the entire computer complex.
- Computer Hardware