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Unit 10: Clocked Sequential Circuits
10.2 Analysis of Clocked Sequential Circuits Notes
Analysis of clocked sequential circuits with an example
Figure 10.4: Sequential Circuit Design Steps
Verbal
Description of
the Problem Circuit
Diagram
State Diagram
FF I/P
Equations &
State Table Q/P
Equations
Excitation
Minimization
Flip-Flop
Techniques Tables
State Output and
Reduced Assignment States
State Table Transition
Table
The behaviour of a sequential circuit is determined from the inputs, outputs and states of its
flip-flops.
Both the outputs and the next state are a function of the inputs and the present state.
Recall from previous lesson that sequential circuit design involves the flow as shown.
Analysis consists of obtaining a state-table or a state-diagram from a given sequential circuit
implementation. In other words analysis closes the loop by forming state-table from a given
circuit-implementation. We will show the analysis procedure by deriving the state table of the
example circuit we considered in synthesis. The circuit is shown in Figure 10.5.
Figure 10.5: A Clocked Sequential Circuit
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