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Question 13

Computer Awareness Boolean algebra Medium

Consider the following statements $$ \begin{aligned} & (A).~ \text{Combinational logic circuits do not have memory,} \\ & \ \ \ \text{while sequential logic circuits have memory elements} \\[6pt] & (B).~ \text{Sequential logic circuits depend only on the current inputs} \\ & \ \ \ \text{while combinational logic circuits depend on both current} \\ & \ \ \ \text{and past inputs} \\[6pt] & (C).~ \text{Flip-flops and latches are examples} \\ & \ \ \ \text{of combinational logic circuits} \\[6pt] & (D).~ \text{Multiplexer is an example} \\ & \ \ \ \text{of combinational logic circuit} \end{aligned} $$ Choose the correct statement/statements from the options given below:

(A) (A) and (D) only
(B) (A), (B) and (D) only
(C) (A), (B), (C) and (D)
(D) (B), (C) and (D) only
View Dynamic Solution & Explanation ▼
Correct Solution: Option A

Step-by-step Solution:

Explanation:

We analyze each statement one by one:

  • (A) Combinational logic circuits do not have memory, while sequential logic circuits do have memory elements. ✅ Correct.
  • (B) Sequential circuits depend only on current inputs, while combinational circuits depend on both current and past inputs. ❌ Incorrect, because it is the other way around: - Combinational circuits → depend only on current inputs. - Sequential circuits → depend on both current inputs and past states (memory).
  • (C) Flip-flops and latches are examples of combinational circuits. ❌ Incorrect, because flip-flops and latches are sequential circuits (they store state).
  • (D) Multiplexer (MUX) is an example of a combinational circuit. ✅ Correct.

Therefore, the correct statements are: (A) and (D).

Final Answer: Option (A)

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