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Home ‣ Digital Electronics ‣ Counters Comments
  • Question

  • Asynchronous counters are known as modulus counters.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • False 

    • Counters problems

    Search Results

    • 1. The 7447 has a 4-bit BCD input, seven individual active-LOW outputs, and a ripple blanking input and output.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. In many cases, counters must be strobed in order to eliminate glitches.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. Generally speaking, the synchronous counter requires more circuitry than an asynchronous counter.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. When implementing a complete system application using IC counter chips, output devices such as LED indicators must be configured to operate from the counter outputs.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. In a 74192 BCD decade up-/down-counter, the terminal count up and the terminal count down are active-LOW.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Three cascaded modulus-10 counters have an overall modulus of 1000.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. A parallel in/serial out shift register enters all data bits simultaneously and transfers them out one bit at a time.

    • Options
    • A. True
    • B. False
      • Discuss
    • 8. The terminal marked A on the CTR block in the given figure is the SET terminal.


    • Options
    • A. True
    • B. False
      • Discuss
    • 9. One characteristic of a ring counter is that the modulus is equal to the number of flip-flops in the register and, consequently, there are never any unused or invalid states.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. 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

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