Tip:A–D to answerE for explanationV for videoS to reveal answer
Select the property of combinational circuit.
A. Only depends upon present input
B. Only depends upon past input
C. Have no memory
D. Uses flip flop for temporary storage
- A.
A, C
(Correct Answer) - B.
A, B, C
- C.
C, A, D
- D.
B, A
Explanation
Solution
In digital electronics, a Combinational Circuit is defined by specific characteristics regarding its output and storage capabilities:
-
Output Dependency: The output at any instant of time depends only on the levels of the present input variables. It does not consider past inputs.
(This confirms statement A is correct).
-
Memory Requirement: Combinational circuits do not contain any memory elements (like flip-flops or latches) to store information.
(This confirms statement C is correct).
-
Analysis of other statements:
-
B is incorrect because only sequential circuits depend on past inputs.
-
D is incorrect because flip-flops are the building blocks of sequential circuits, not combinational ones.
Since statements A and C are the only true properties, the correct answer is (a).
Correct Option: (a) A, C
