●●●●● Basic concept ::o ●●●● The output of memory(flip -flops)defines the state of a sequential machine. It implies that the state variables are the flip-flop outputs. The next-state equation is the characteristics equation of the flip- lops used in circuit, Excitation variables are input to memory(flip-flops) When flip-flops are used for the system memory, the excitation variables are the inputs(J-K,R-S,D, t)to the flip-flops. Excitation variables are generated by the input combinational logic operating on the state variables and input variables.⚫ The output of memory (flip-flops) defines the state of a sequential machine. It implies that the state variables are the flip-flop outputs. The next-state equation is the characteristics equation of the flip￾flops used in circuit. ⚫ Excitation variables are input to memory (flip-flops). When flip-flops are used for the system memory, the excitation variables are the inputs (J-K, R-S, D, T) to the flip-flops. Excitation variables are generated by the input combinational logic operating on the state variables and input variables. Basic concept