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Step 1 of 4 7.052E Refer Table 7-9 from the text book. Using the table and by changing the order of the states to S1, S3, S2 the new state yields the following state table as shown in Table 1. Q1Q0 XY Z 00 01 11 10 S0 S1 S3 S1 1 S1 S1 S3 S2 S3 0 S3 S3 S2 S0 S2 0 S2 S2 S0 S1 S0 0 Table 1 Step 2 of 4 The K-maps using the table 1 is as shown in Figure 1. Y D1 X X XY D2 XY Q1 Q2 00 01 11 10 Q1 Q2 00 01 11 10 00010 01 1 1 1 01 1 1 0 Q2 Q2 11 1 0 0 0 11 1 0 1 0 Q1 Q1 10 0101 Y Y Figure 1 Step 3 of 4 The excitation equations are, Step 4 of 4 From the excitation equations, the circuit realisation with the new equations requires two more 3-input AND gates and a 6-input OR gate instead of a 4-input OR gate.