|1.Clock pulse is given to first f/f and not simultaneously to all.||1. Clock pulse is given to all flip-flops simultaneously.|
|2. The o/p of preceding f/f (after 1st f/f) are given as i/p to clock pulse.||2. The flip-flop connections are dependent on k-map equations- no present connections are done.|
|3. Propagation delay is high so max frequency is low.||3. Propagation delay is low so max frequency is high.|
|4. Circuit is simple.||4.Circuit becomes complex as states increases.|
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