Tandem Computers Incorporated

Seema Chandra

Martin W Sanner

Checking method and apparatus for monitoring the proper operation of a state machine of the type operable to produce control signals that in turn, cause other digital apparatus to produce responsive signals. Part of the checker apparatus, in effect, emulates the digital apparatus, receiving the control signals to produce therefrom emulated response signals that, when compared to the control signals, provide an indication of correct operation of the state machine means and associated circuitry.

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San Jose, CA, United States of America

Seema Chandra