Structural redundancy and faults Consider the circuit of Figure 8.20 wh ich has two inputs and two outputs.

Let us suppose that this circuit can be affected by stuck-at '0' or '1' of the wires noted a and ß.

1. Study the failures induced by each of these faults.

2. From this study, deduce structural redundancies.

3. Does this circuit present functional redundancy?

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b B Figure 8.20. Redundancy of a circuit g DE