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  • Question

  • 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

  • Correct Answer
  • True 

    • Counters problems

    Search Results

    • 1. In many cases, counters must be strobed in order to eliminate glitches.

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

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. 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
    • 4. 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
    • 5. The terminal count of a typical modulus-10 binary counter is 1010.

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. Asynchronous counters are known as modulus counters.

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

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


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

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