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Home ‣ Digital Electronics ‣ Logic Gates See What Others Are Saying!
  • Question

  • The gates in this figure are implemented using TTL logic. If the input of the inverter is open, and you apply logic pulses to point B, the output of the AND gate will be ________.

    The gates in this figure are implemented using TTL logic. If the input of the inverter is open, and


  • Options
  • A. a steady LOW
  • B. a steady HIGH
  • C. an undefined level
  • D. pulses

  • Correct Answer
  • a steady LOW 

    • More questions

    • 1. The first microprocessor had a(n)________.

    • Options
    • A. 1-bit data bus
    • B. 2-bit data bus
    • C. 4-bit data bus
    • D. 8-bit data bus
      • Discuss
    • 2. If a 3-input OR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?

    • Options
    • A. 1
    • B. 2
    • C. 7
    • D. 8
      • Discuss
    • 3. The select inputs to a multiplexer may also be called address lines.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. How many 2-input NOR gates does it take to produce a 2-input NAND gate?

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss
    • 5. The 7476 and 74LS76 are both dual flip-flops.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. How many different states does a 3-bit asynchronous counter have?

    • Options
    • A. 2
    • B. 4
    • C. 8
    • D. 16
      • Discuss
    • 7. The invalid range for an input to TTL logic is from ________.

    • Options
    • A. 0 to 0.8 V
    • B. 1.2 to 1.6 V
    • C. 0.8 to 2.0 V
    • D. 2.0 to 5.0 V
      • Discuss
    • 8. A typical fan-out for most TTL is 9.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. The outputs of the 74138 octal decoder are enabled when the enable inputs are
      .

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Convert the following hexadecimal number to decimal.
      B516

    • Options
    • A. 212
    • B. 197
    • C. 165
    • D. 181
      • Discuss

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