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Home ‣ Digital Electronics ‣ Integrated-Circuit Logic Families See What Others Are Saying!
  • Question

  • The dc noise margins calculated using the proper values from a standard TTL data sheet are the worst-case margins. The typical dc noise margins are usually somewhat higher.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • More questions

    • 1. CPLDs and FPGAs are often referred to as high-capacity programmable logic devices (HCPLDs).

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. Based on the indications of probe A in the figure given below, what is wrong, if anything, with the circuit?


    • Options
    • A. The logic probe is unable to determine the state of the circuit at that point and is blinking to alert the technician to the problem.
    • B. The output appears to be shorted to Vcc, but is being pulsed by the pulser.
    • C. The output appears to be LOW, but is being pulsed by the pulser.
    • D. Nothing appears to be wrong at that point.
      • Discuss
    • 3. The BCD number for decimal 16 is ________.

    • Options
    • A. 00010110
    • B. 00010000
    • C. 00010010
    • D. 11100000
      • Discuss
    • 4. Solve this binary problem: 01000110 ÷ 00001010 =

    • Options
    • A. 0111
    • B. 10011
    • C. 1001
    • D. 0011
      • Discuss
    • 5. Which digital system translates coded characters into a more useful form?

    • Options
    • A. encoder
    • B. display
    • C. counter
    • D. decoder
      • Discuss
    • 6. The expression can be directly implemented using only ________.

    • Options
    • A. an XOR gate
    • B. an XNOR gate
    • C. an AOI circuit
    • D. three 2-input NAND gates
      • Discuss
    • 7. D/A conversion is the process of taking a voltage or current and converting it to a digital code.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. ________ output levels would not be a valid LOW for a TTL gate.

    • Options
    • A. 0.2 V
    • B. 0.3 V
    • C. 0.5 V
    • D. All of the above.
      • Discuss
    • 9. DMA is particularly suited for data transfer between the ________.

    • Options
    • A. disk drive and CPU
    • B. disk drive and RAM
    • C. disk drive and ROM
    • D. disk drive and I/O
      • Discuss
    • 10. Which is not part of the execution unit (EU)?

    • Options
    • A. Arithmetic logic unit (ALU)
    • B. Clock
    • C. General registers
    • D. Flags
      • Discuss

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