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Differentiate between Asynchronous and synchronous counters.

Mumbai University > Electronics Engineering > Sem 3 > Digital circuits and design

Marks: 10M

Year: Dec 2015

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Asynchronous Synchronous
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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