Consider the following statements regarding combinational and sequential…
2024
Consider the following statements regarding combinational and sequential circuits.
(A) Output of combinational circuits depends on the only current input.
(B) Output of combinational circuit depends on the both current input and previous output.
(C) Output of sequential circuit depends on the current input.
(D) Output of sequential circuit depends on both current input and previous output.
Choose the correct answer from the options given below:
- A.
(A) and (C) Only
- B.
(A) and (D) Only
- C.
(B) and (D) Only
- D.
(B) and (C) Only.
Attempted by 433 students.
Show answer & explanation
Correct answer: B
Explanation:
Statement: Output of combinational circuits depends only on the current input.
Verdict: True. Combinational circuits have no memory; outputs are a pure function of present inputs.
Statement: Output of combinational circuit depends on both current input and previous output.
Verdict: False. This implies memory; combinational circuits do not use past outputs or state.
Statement: Output of sequential circuit depends on the current input.
Verdict: True (but incomplete). Sequential circuits do depend on current input, but they also depend on past state or previous outputs.
Statement: Output of sequential circuit depends on both current input and previous output.
Verdict: True. Sequential circuits have memory (state), so outputs can depend on current inputs and previous outputs/state.
Conclusion: The correct answer is the choice that selects the first and fourth statements: the statement that combinational outputs depend only on current inputs, and the statement that sequential outputs depend on both current inputs and previous outputs.
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