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4 votes
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Advantage of synchronous sequential circuits over asynchronous one is :

  1. Lower hardware requirement
  2. Better noise immunity
  3. Faster operation
  4. All of the above
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3 Answers

5 votes
5 votes

no option is correct

i copied and pasted the bikram sir comment because this content is good but nobody is focusing on this comment due to large no of comment in this question(all below content is copy paste i did not change anything)

Option A : Lower hardware requirement , is also wrong option .

Plz read my below analysis :

  1. Question asked advantage of synchronous circuits over asynchronous ones ..
  2. see below table for Synchronous Vs Asynchronous 

Synchronous Sequential Circuit is based on state time defined by external means such as clock. 

Asynchronous Sequential Circuit is a circuit whose state time depends solely upon the internal logic circuit delays. [1]
 Logic Gates are required based on design   No extra Logic Gates are required [2]
In Synchronous circuit memory element or digital storage is there and cost is more due to extra hardware.  In Asynchronous ones no such memory element present and cost is also less.[3]

See the first diagram here [3] http://www.ee.surrey.ac.uk/Projects/CAL/seq-switching/synchronous_and_asynchronous_cir.htm 

All these points only means that Asynchronous circuit have less hardware requirement than Synchronous ones .. and the question asked reverse !!

References:

[1] http://verticalhorizons.in/difference-between-synchronous-and-asynchronous-sequential-circuit/

[2] http://www.navodayaengg.in/wp-content/uploads/2015/09/U6-L_47-Difference-between-Asynchronous-and-Synchronous-Counter1.pdf

Hope i am clear now , this question is Wrongly framed and no options are correct !!

1 votes
1 votes

Synchronous circuits need additional hardware, so Option A is incorrect.

Since they need additional hardware, they can't be faster than Asynchronous circuits. Option C is incorrect.

Source: http://www.ee.surrey.ac.uk/Projects/CAL/seq-switching/synchronous_and_asynchronous_cir.htm

 

Asynchronous circuits have better noise immunity than synchronous circuits. Option C is incorrect.

Asynchronous circuits feature lower overall power consumption and reduce noise and electromagnetic radiation by more uniformly consuming power

Source: https://m.eet.com/media/1137899/293234.pdf

So, none of the given options is correct.

0 votes
0 votes

A is the best answer here. Synchronous circuits need less stringent hazard management mechanism. 

https://gateoverflow.in/516/gate1991-03-ii

Answer:

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