Example 6.1State tables and Diagrams

Consider a sequential circuit having one input variable x, two state variables y1 and y2, and one output variable z.

Inputs: x = 0

x = 1

States: [y1,y2] = [00] ? A

[y1,y2] = [01] ? B

[y1,y2] = [10] ? C

[y1,y2] = [11] ? D

Outputs: z = 0

z = 1

The state diagram for this circuit is shown in Fig. 6.3

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