The output of a sequential circuit depends on (A) present input only (B) past input only (C) both present and past input (D) past output only

The output of a sequential circuit depends on (A) present input only (B) past input only (C) both present and past input (D) past output only
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Answer :

(C) both present and past input
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Define Asynchronous sequential circuit?

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What is a sequential circuit and What is a combinational circuit? Is there any difference between them? If yes what is it?

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The sequential circuit latch is

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