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  • Question

  • The circuit given below fails to function; the inputs are checked with a logic probe and the following indications are obtained: CLK, J1, J2, J3, K1, K2, and K3 are pulsing. Q and The circuit given below fails to function; the inputs are checked with a logic probe and the followi are HIGH. The circuit given below fails to function; the inputs are checked with a logic probe and the followi and PRE are LOW. What could be causing the problem?

    The circuit given below fails to function; the inputs are checked with a logic probe and the followi


  • Options
  • A. There is no problem.
  • B. The clock should be held HIGH.
  • C. The PRE is stuck LOW.
  • D. The CLR is stuck HIGH.

  • Correct Answer
  • The PRE is stuck LOW. 

    • More questions

    • 1. In an OLMC, where does the FMUX signal go?

    • Options
    • A. OMUX
    • B. D flip-flop
    • C. Matrix
    • D. PAL
      • Discuss
    • 2. Does the cross-coupled NOR flip-flop have active-HIGH or active-LOW set and reset inputs?

    • Options
    • A. active-HIGH
    • B. active-LOW
      • Discuss
    • 3. The data sheet for the 74 series of TTL ICs shows that Vcc has a range of 4.5 V to 5.5 V.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. In the MAX7000S device up to ________ signals can feed each LAB from the PIA.

    • Options
    • A. 0
    • B. 18
    • C. 36
    • D. 72
      • Discuss
    • 5. The Boolean equation of the exclusive-NOR function is .

    • Options
    • A. True
    • B. False
      • Discuss
    • 6. When four 1s are taken as a group on a Karnaugh map, the number of variables eliminated from the output expression is ________.

    • Options
    • A. 1
    • B. 2
    • C. 3
    • D. 4
      • Discuss
    • 7. In most modern computers, the transfer of data takes place over a common set of connecting lines called a ________.

    • Options
    • A. data bus
    • B. bus line
    • C. bus cable
    • D. data line
      • Discuss
    • 8. A(n) ________ is a combinational logic circuit that compares two input binary quantities and generates outputs to indicate which one has the greater magnitude.

    • Options
    • A. demultiplexer
    • B. code converter
    • C. magnitude comparator
    • D. E-MOS
      • Discuss
    • 9. A simultaneous, multiple comparator, or flash converter uses parallel encoding.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. The hexadecimal equivalent of a decimal number would produce a larger number than the original decimal number.

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

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