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Question

The characteristics of the combinational circuits are :

A. Output at any time is function of inputs at that time

B. Contains memory elements

C. Do not have feedback paths

D. Clock is used to trigger the circuits to obtain outputs

Choose the correct answer from the options given below :

The correct answer is

A and C only

A and C are correct. In the standard combinational model, outputs depend only on current inputs, with no storage or feedback paths. Clock-triggered state changes and memory elements characterize sequential circuits.

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Important Questions from Combinational Circuits

  1. Which of the following represents the borrow in a half subtraction?

  2. Carry input is present in which of the following?

  3. The number of control lines for 8-to-1 multiplexer is:

  4. X/Y (where X represents the input code and Y represents the output code) as a qualifying symbol does NOT relate to:

  5. Consider 4-bit gray code representation of numbers. Let h3 h2 h1 h0 be the gray code representation of a number n and g1g2g3g0 be the gray code representation of the number (n + 1) modulo 16. Which one of the following functions is correct?

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