INTERVIEW QUESTIONS COMPUTER HARDWARE HARDWARE DESIGN DETAILS

Question: Design a divide-by-3 sequential circuit with 50% duty circle.

Answer:

Source: CoolInterview.com

take a johnson counter with 3 f/f's
that is to say with 6 states(2*3)
now double the i/p clock frequency to the counter
the o/p of the 3rd f/f is divide by 6 of the i/p with 50% duty cycle
so effectively u got divide by 3 freq with 50% duty cycle Source: CoolInterview.com

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