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Home ‣ Digital Electronics ‣ Describing Logic Circuits Comments
  • Question

  • The commutative law of Boolean addition states that A + B = A · B.


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  • A. True
  • B. False

  • Correct Answer
  • False 

    • Describing Logic Circuits problems

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    • 1. The output of a NAND gate is the inverse of the output for an AND gate for all possible input combinations.

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    • A. True
    • B. False
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    • 2. A two-input NAND gate has inputs of 1 and 0; the output is 0.

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    • A. True
    • B. False
      • Discuss
    • 3. VHDL is not a new language.

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    • A. True
    • B. False
      • Discuss
    • 4. In Boolean algebra, 1 · 0 = 0.

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    • A. True
    • B. False
      • Discuss
    • 5. The symbol shown below is an AND gate.


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    • A. True
    • B. False
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    • 6. Boolean algebra was first applied to the analysis of digital circuits by Claude Shannon at Stanford University.

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    • A. True
    • B. False
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    • 7. Output logic levels for certain input conditions of a logic circuit may often be determined without using the Boolean expression.

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    • A. True
    • B. False
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    • 8. The expressions, , are equivalent.

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    • A. True
    • B. False
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    • 9. The application of DeMorgan's theorems to a Boolean expression with double and single inversions produces a resultant expression that contains only single inverter signs over single variables.

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    • A. True
    • B. False
      • Discuss
    • 10. The OR gate performs like two switches wired in a series.

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    • A. True
    • B. False
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