(a) Construct a transition table and state graph for the circuit shown in Figure 2. (b) Construct a timing chart for the circuit for an input sequence X Indicate false outputs, if any. (Assume that initially Q1 = Q2 = 0 and that X changes midway between the rising and falling clock edges.) 10101. (c) List the output values produced by the input sequence. X J1 Q1 CLK K1 J2 Q2 K2 Q2 Figure 2

Q: CIK J K

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Latches and Flip Flop

Just like logic gates, the latches and flip-flops are the important elements of an electronic circuit. The logic gates form the important part of combinatorial circuits, while the latches and flip-flops form the essential part of a sequential circuit. Sequential circuits form the important concept of automata theory in electronics and electrical engineering, these circuits are a kind of logic circuit whose output depends on both present input and past inputs, that is, the input history.