![]() For simplicity (t) will be omitted from the present state. The right side presents the Boolean expression that specifies the condition of setting the next state as function of the present state and inputs. ![]() Since the left side of the state equation presents the next state and hence (□+1) is used. The state equations are: □ □+1 =□ □ □+□(□)□ □(□+1)=□’(□)□ Therefore, a state equation specifies the condition for a FF state transition. By noting that the D input of a flip-flop determines the value of the next state. Example: This circuit has an input □ and an output □ and two FF’s □ and □. A state equation expresses the next state as a function of the present state and inputs. The analysis of a sequential circuit consists of obtaining a table, a diagram and Boolean expressions that describe the behavior of a sequential circuit.Ĥ State Equations A clocked sequential circuit can be described by algebraic equations called state equations or transition equations. A state table and state diagram are used to describe the behavior of sequential circuits. The Boolean expressions that describe sequential circuits must include the time sequence. ![]() ![]() The outputs and the next state are both function on the applied inputs and the present state. The behavior of a clocked sequential circuit depends on the inputs, outputs and the internal state. Presentation on theme: "ANALYSIS OF SEQUENTIAL CIRCUITS"- Presentation transcript:Ģ References Digital Design 5th Edition, Morris Mano ![]()
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