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Combinational Logic Circuits problems

  • 1. The carry output of each adder in a ripple adder provides an additional sum output bit.

  • Options
  • A. True
  • B. False
    • Discuss
  • 2. Single looping in groups of three is a common K-map simplification technique.

  • Options
  • A. True
  • B. False
    • Discuss
  • 3. The input at the 1, 2, 4, 8 inputs to a 4-line to 16-line decoder with active-low outputs is 1110. As a result, output line 7 is driven LOW.

  • Options
  • A. True
  • B. False
    • Discuss
  • 4. The XOR gate will produce a HIGH output if only one but not both of the inputs is HIGH.

  • Options
  • A. True
  • B. False
    • Discuss
  • 5. The Boolean equation Digital Electronics Combinational Logic Circuits: The Boolean equation results from this Karnaugh map.

    Digital Electronics Combinational Logic Circuits: The Boolean equation


  • Options
  • A. True
  • B. False
    • Discuss
  • 6. TTL stands for transistor-technology-logic.

  • Options
  • A. True
  • B. False
    • Discuss
  • 7. In an even-parity system, the following data will produce a parity bit = 1.
    data = 1010011

  • Options
  • A. True
  • B. False
    • Discuss
  • 8. A pull-up resistor is a resistor used to keep a given point in a circuit HIGH when in the active state.

  • Options
  • A. True
  • B. False
    • Discuss
  • 9. The circuit given below implements the equation, Digital Electronics Combinational Logic Circuits: The circuit given below implements the equation,.

    Digital Electronics Combinational Logic Circuits: The circuit given below implements the equation,


  • Options
  • A. True
  • B. False
    • Discuss
  • 10. A Karnaugh map will ________.

  • Options
  • A. eliminate the need for tedious Boolean simplifications
  • B. allow any circuit to be implemented with just AND and OR gates
  • C. produce the simplest sum-of-products expression
  • D. give an overall picture of how the signals flow through the logic circuit
    • Discuss

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