Test of a small circuit Consider the small circuit in Figure 13.2.

1. Apply the method seen in section 13.2 to find all the test vectors for each of the stuck-at '0' or '1' faults of this circuit. Draw the resulting fault table and comment the coverage efficiency of the different input vectors.

2. Prom this fault table deduce an optimal test sequence, i.e. a test sequence detecting all faults and having a minimal number of vectors.