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  • Question
  • A 4-bit counter has a maximum modulus of ________.


  • Options
  • A. 3
  • B. 6
  • C. 8
  • D. 16

  • Correct Answer
  • 16 


  • Counters problems


    Search Results


    • 1. How many AND gates would be required to completely decode ALL the states of a MOD-64 counter, and how many inputs must each AND gate have?

    • Options
    • A. 128 gates, 6 inputs to each gate
    • B. 64 gates, 5 inputs to each gate
    • C. 64 gates, 6 inputs to each gate
    • D. 128 gates, 5 inputs to each gate
    • Discuss
    • 2. The final output of a modulus-8 counter occurs one time for every ________.

    • Options
    • A. 8 clock pulses
    • B. 16 clock pulses
    • C. 24 clock pulses
    • D. 32 clock pulses
    • Discuss
    • 3. A 22-MHz clock signal is put into a MOD-16 counter. What is the frequency of the Q output of each stage of the counter?

    • Options
    • A. Q1 = 22 MHz, Q2 = 11 MHz, Q3 = 5.5 MHz, Q4 = 2.75 MHz
    • B. Q1 = 11 MHz, Q2 = 5.5 MHz, Q3 = 2.75 MHz, Q4 = 1.375 MHz
    • C. Q1 = 11 MHz, Q2 = 11 MHz, Q3 = 11 MHz, Q4 = 11 MHz
    • D. Q1 = 22 MHz, Q2 = 22 MHz, Q3 = 22 MHz, Q4 = 22 MHz
    • Discuss
    • 4. Select the response that best describes the use of the Master Reset on typical 4-bit binary counters.

    • Options
    • A. When MR1 and MR2 are both HIGH, all Qs will be reset to zero.
    • B. When MR1 and MR2 are both HIGH, all Qs will be reset to one.
    • C. MR1 and MR2 are provided to synchronously reset all four flip-flops.
    • D. To enable the count mode, MR1 and MR2 must be held LOW.
    • Discuss
    • 5. What decimal value is required to produce an output at "X"?


    • Options
    • A. 1
    • B. 1 or 4
    • C. 2
    • D. 5
    • Discuss
    • 6. How many data bits can be stored in the register shown below?


    • Options
    • A. 5
    • B. 32
    • C. 31
    • D. 4
    • Discuss
    • 7. A seven-segment, common-anode LED display is designed for:

    • Options
    • A. all cathodes to be wired together
    • B. one common LED
    • C. a HIGH to turn off each segment
    • D. disorientation of segment modules
    • Discuss
    • 8. An asynchronous 4-bit binary down counter changes from count 2 to count 3. How many transitional states are required?

    • Options
    • A. None
    • B. One
    • C. Two
    • D. Fifteen
    • Discuss
    • 9. Synchronous counters eliminate the delay problems encountered with asynchronous counters because the:

    • Options
    • A. input clock pulses are applied only to the first and last stages
    • B. input clock pulses are applied only to the last stage
    • C. input clock pulses are not used to activate any of the counter stages
    • D. input clock pulses are applied simultaneously to each stage
    • Discuss
    • 10. In an HDL ring counter, many invalid states are included in the programming by:

    • Options
    • A. using a case statement.
    • B. using an elsif statement.
    • C. including them under others.
    • D. the ser_in line.
    • Discuss


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