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when designing is considered,for JK f/f we have another extra table called excitation table ,which is not while designing D f/f.could you explain what and why the excitaion table is used in JK f/f when designing
D flip-flops, too, have an excitation table. It's just not that interesting The reason is you can get lost more easily with many JK's than with D's, for a JK can do more things (set, reset, hold, toggle) whereas a D projects its input on a transition and holds it elsewhere. Easy to keep track.