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  • Question

  • An invalid condition in the operation of an active-HIGH input S-R latch occurs when ________.


  • Options
  • A. HIGHs are applied simultaneously to both inputs S and R
  • B. LOWs are applied simultaneously to both inputs S and R
  • C. a LOW is applied to the S input while a HIGH is applied to the R input
  • D. a HIGH is applied to the S input while a LOW is applied to the R input

  • Correct Answer
  • HIGHs are applied simultaneously to both inputs S and R 

    • More questions

    • 1. The 74XX series TTL operates using saturated switching in which many of the transistors, when conducting, will be in the saturated condition.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. The SPLD classification includes the ________ PLD devices.

    • Options
    • A. earliest
    • B. smallest
    • C. largest
    • D. newest
      • Discuss
    • 3. The simplified form of is ________.

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 4. Most FPGA logic modules utilize a(n) ________ approach to create the desired logic functions.

    • Options
    • A. AND array
    • B. Look-up table
    • C. OR array
    • D. AND and OR array
      • Discuss
    • 5. A 74HC147 priority encoder has ten active-LOW inputs and four active-LOW outputs. What would be the state of the four outputs if inputs 4 and 5 are LOW and all other inputs are HIGH?

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 6. Connecting components together using HDL is not difficult.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. What is the purpose of a sample-and-hold circuit?

    • Options
    • A. To keep temporary memory
    • B. To hold a voltage constant so an ADC has time to produce an output
    • C. To hold a voltage constant so a DAC has time to produce an output
    • D. To hold data after a multiplexer has selected an output
      • Discuss
    • 8. The flash converter is the fastest analog-to-digital conversion method.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. How many macrocells are in a MAX700S LAB?

    • Options
    • A. 8
    • B. 16
    • C. 32
    • D. 64
      • Discuss
    • 10. Ring shift and Johnson counters are:

    • Options
    • A. synchronous counters
    • B. aynchronous counters
    • C. true binary counters
    • D. synchronous and true binary counters
      • Discuss

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