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Home ‣ Digital Electronics ‣ Combinational Logic Analysis Comments
  • Question

  • A 4-variable AND-OR circuit produces a 0 at its Y output. Which combination of inputs is correct?


  • Options
  • A. A = 0, B = 0, C = 1, D = 1
  • B. A = 1, B = 1, C = 0, D = 0
  • C. A = 1, B = 1, C = 1, D = 1
  • D. A = 1, B = 0, C = 1, D = 0

  • Correct Answer
  • A = 1, B = 0, C = 1, D = 0 

    • Combinational Logic Analysis problems

    Search Results

    • 1. Implementing the expression AB + CDE using NAND logic, we get:


    • Options
    • A. (A)
    • B. (B)
    • C. (C)
    • D. (D)
      • Discuss
    • 2. One of De Morgan's theorems states that . Simply stated, this means that logically there is no difference between:

    • Options
    • A. a NOR and an AND gate with inverted inputs
    • B. a NAND and an OR gate with inverted inputs
    • C. an AND and a NOR gate with inverted inputs
    • D. a NOR and a NAND gate with inverted inputs
      • Discuss
    • 3. The expression W(X + YZ) can be converted to SOP form by applying which law?

    • Options
    • A. associative law
    • B. commutative law
    • C. distributive law
    • D. none of the above
      • Discuss
    • 4. Which output expression might indicate a product-of-sums circuit construction?

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 5. From the truth table below, determine the standard SOP expression.


    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. One possible output expression for an AND-OR-Invert circuit having one AND gate with inputs A, B, and C and one AND gate with inputs D and E is ________.

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 7. Before an SOP implementation, the expression would require a total of how many gates?

    • Options
    • A. 1
    • B. 2
    • C. 4
    • D. 5
      • Discuss
    • 8. A 4-variable AND-OR-Invert circuit produces a 0 at its Y output. Which combination of inputs is correct?

    • Options
    • A.
    • B.
    • C.
    • D. none of the above
      • Discuss
    • 9. A logic circuit with an output consists of ________.

    • Options
    • A. two AND gates, two OR gates, two inverters
    • B. three AND gates, two OR gates, one inverter
    • C. two AND gates, one OR gate, two inverters
    • D. two AND gates, one OR gate
      • Discuss
    • 10. Referring to the GAL diagram, which is the correct logic function?


    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss

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