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  • Question

  • The register in the 8085 microprocessor that is used to keep track of the memory address of the next opcode to be run in the program is the ________.


  • Options
  • A. stack pointer
  • B. program counter
  • C. instruction pointer
  • D. accumulator

  • Correct Answer
  • program counter 

    • More questions

    • 1. The difference between the upper and lower trigger points is called the Schmitt trigger.

    • Options
    • A. True
    • B. False
      • Discuss
    • 2. 

      In the given circuit, what must the pulse width and time between pulses be to allow the capacitor to completely charge by the end of each pulse and to completely discharge between each pulse?


    • Options
    • A. 940 µs
    • B. 2.82 ms
    • C. 3.76 ms
    • D. 4.7 ms
      • Discuss
    • 3. If four 10 kΩ resistors are in series with a single 20 kΩ resistor and one of the parallel resistors shorts, the voltage across the other parallel resistors ________.

    • Options
    • A. increases
    • B. decreases
    • C. remains the same
    • D. drops to zero
      • Discuss
    • 4. For inductions in series, LT = L1 + L2 + L3 +...

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. 

      It takes ______ for the output voltage in the given circuit to reach its maximum value.


    • Options
    • A. 0 s
    • B. 243.9 µs
    • C. 1 ms
    • D. 1.22 ms
      • Discuss
    • 6. 

      The output voltage in the given circuit is _____ at the end of the second pulse.


    • Options
    • A. 1.06 V
    • B. 7.56 V
    • C. 3.32 V
    • D. 12 V
      • Discuss
    • 7. If the input to a comparator is a sine wave, the output is a(n) _________.

    • Options
    • A. ramp voltage
    • B. sine wave
    • C. sawtooth wave
    • D. rectangular wave
      • Discuss
    • 8. The input resistance of the base of an emitter-follower is usually _________.

    • Options
    • A. very low
    • B. very high
    • C. shorted to ground
    • D. open
      • Discuss
    • 9. A resistor with a value of 9.9 kΩ 10% could have a value between 8.91 kΩ and 10.89 kΩ.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. Signal comparisons may be most easily seen when using which item of test equipment?

    • Options
    • A. spectrum analyzer
    • B. multimeter
    • C. function generator
    • D. dual trace oscilloscope
      • Discuss

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