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Self-testing comparator

Self-testing comparator

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A key element in the mechanisation of fault-tolerant system or error-detection system is a logic device call a ‘comparator’.The device detects computer failures by data comparison. The letter describes a ‘self-testing comparator’. We show that, in the circuit, described, only the output wire must be considered hard core. All the gates and connections of this circuit are tested during the working phases.

References

    1. 1)
      • J.J. Mercier . (1974) Contribution au test en ligne des circuits combinatoires, Thèse 3e cycle.
    2. 2)
      • N. Giambiasi . (1974) Contribution au test en ligne des circuits séquentiels, Thèse 3e cycle.
    3. 3)
      • J.C. Bertrand . (1975) La detection automatique des pannes dans les systemes logiques, Thèse d'Etat.
    4. 4)
      • A. Avizienis , G. Filley , P. Mathur , A. Rennels , A. Rennels , J.S. Rohr , D.K. Robin . The star computer, an investigation of fault tolerant computer design. IEEE Trans.
    5. 5)
      • W. Pierce . (1965) , Failure tolerant computer design.
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