Question

Consider the following statements.
(A) Combinational logic circuits do not have memory, while sequential logic circuits have memory elements.
(B) Sequential logic circuits depend only on the current inputs, while combinational logic circuits depend on both current and past inputs.
(C) Flip-flops and latches are examples of combinational logic circuits.
(D) Multiplexer is an example of combinational logic circuit.

• A. (A) and (D) only
• B. (A), (B), and (C) only
• C. (A), (B), (C) and (D)
• D. (A), (C) and (D) only

Hint:

In logic circuits, **combinational circuits** depend only on current inputs, while **sequential circuits** depend on both current and past inputs due to memory elements like flip-flops.

Answer 1

The Correct Option is A

Step 1: Statement Evaluation.
- (A) True: Combinational logic circuits lack memory, whereas sequential circuits incorporate memory elements such as flip-flops or latches. 

- (B) False: Sequential logic circuits are influenced by both current and preceding inputs due to their memory components, while combinational logic circuits are solely dependent on present inputs. 

- (C) False: Flip-flops and latches are classifications of sequential logic circuits, not combinational. 

- (D) True: A multiplexer exemplifies a combinational logic circuit by selecting one input from multiple options based on a control signal. 
 

Step 2: Final Determination. 
Consequently, statements (A) and (D) are accurate, leading to the selection of option (1).