International Business Machines Corporation

Peter N Horowitz

Lawrence G Heller

William R Griffin

A system for testing a differential logic network is provided which includes a differential exclusive OR circuit having a plurality of inputs for receiving complementary signals from the differential logic network and first and second output terminals and means, e.g., a conventional exclusive OR circuit, for determining the voltage difference between the first and second output terminals to indicate the presence or absence of a fault or error in the differential logic network under test.

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Essex Junction, VT, United States of America

Peter N Horowitz