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Digital Electronics - Engineering

Q1:

Which of the following characteristic are necessary for a sequential circuit?
  1. It must have 6 gates
  2. It must have feedback
  3. Its output should depend on past value
Which of the above statements are correct?

A 1, 2, 3

B 1, 2

C 2, 3

D 1, 3

ANS:C - 2, 3

The number of gates may be any.