5. If a sequential circuit possesses N memory elements (binary cells or flip flops), what is the maximum number of states could it have?

  1. N
  2. N^2
  3. 2N
  4. 2^N
  5. None of these

4 is CORRECT. The maximum number of states that a sequential logic circuit with n memory elements may have is 2^n.

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4 is WRONG.

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