Correct option is C
A. Output at any time is a function of inputs at that time: This is
true for combinational circuits. The output depends solely on the current inputs and not on past inputs or states.
B. Contains memory elements: This is
false. Combinational circuits do not contain memory elements; they do not store any past state.
C. Do not have feedback paths: This is
true. Combinational circuits are acyclic and do not involve loops or feedback mechanisms.
D. Clock is used to trigger the circuits to obtain outputs: This is
false. Combinational circuits do not require a clock signal as they are not time-dependent; outputs are generated instantaneously based on the inputs.
Information Booster
1.
Definition of Combinational Circuit:
· A type of circuit where the output is determined only by the current inputs.
· Examples include adders, multiplexers, and encoders.
2.
Key Features:
· Memoryless behavior: No previous state information is stored.
· Feedback-free design: Outputs do not loop back to the inputs.
3.
Contrast with Sequential Circuits:
· Sequential circuits have memory and depend on past inputs or states.
· They often require a clock signal for synchronization.
4.
Applications of Combinational Circuits:
· Arithmetic and logical operations (e.g., ALU in processors).
· Data routing (e.g., multiplexers, demultiplexers).
· Code conversion (e.g., binary to BCD encoders).