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Home ‣ Digital Electronics ‣ Digital System Projects Using HDL See What Others Are Saying!
  • Question

  • In the frequency counter, if the clock generator produces a 100 kHz system clock signal, how many decade counters are required to measure 1 Hz?


  • Options
  • A. 6
  • B. 5
  • C. 4
  • D. 3

  • Correct Answer
  • 5 

    • More questions

    • 1. In a MAX7000S device, when an I/O pin is configured as an input, the associated macrocell can be used for ________.

    • Options
    • A. buried logic
    • B. another output
    • C. extra speed
    • D. in-system testing
      • Discuss
    • 2. A half-adder circuit would normally be used each time a carry input is required in an added circuit.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. A very important attribute of the conditional signal assignment statement is its sequential operation.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. In general, when using a scope to troubleshoot digital systems the instrument should be triggered by ________.

    • Options
    • A. the A channel or channel 1
    • B. the vertical input mode, when using more than one channel
    • C. the system clock
    • D. line sync, in order to observe troublesome power line glitches
      • Discuss
    • 5. Incandescent 7-segment displays are especially well suited for use in portable battery-operated devices.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. In BCD addition, the value ________ is added to any invalid code group.

    • Options
    • A. 010101
    • B. 0U812
    • C. 100110
    • D. 0110
      • Discuss
    • 7. In the 74121, which is nonretriggerable, any triggers that come in before the end of the timing cycle are ignored.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. SPLDs, CPLDs, and FPGAs are all which type of device?

    • Options
    • A. PAL
    • B. PLD
    • C. EPROM
    • D. SRAM
      • Discuss
    • 9. Gated S-R flip-flops are called asynchronous because the output responds immediately to input changes.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A ROM that allows the user to program data into the chip by permanently opening fusible links is the EPROM.

    • Options
    • A. True
    • B. False
      • Discuss

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