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  • Question
  • Which of the following is not an analog device?


  • Options
  • A. Thermocouple
  • B. Current flow in a circuit
  • C. Light switch
  • D. Audio microphone

  • Correct Answer
  • Light switch 


  • Digital Concepts problems


    Search Results


    • 1. The holes through a PC board are ________.

    • Options
    • A. smaller with SMT than with through-hole mounting
    • B. larger with SMT than with through-hole mounting
    • C. the same size as with through-hole mounting
    • D. usually unnecessary
    • Discuss
    • 2. A classification of ICs with complexities of 12 to 100 equivalent gates on a chip is known as ________.

    • Options
    • A. SSI
    • B. MSI
    • C. LSI
    • D. VLSI
    • Discuss
    • 3. A common instrument used in troubleshooting a digital circuit is a(n) ________.

    • Options
    • A. logic probe
    • B. oscilloscope
    • C. pulser
    • D. all of the above
    • Discuss
    • 4. Any number with an exponent of zero is equal to:

    • Options
    • A. zero
    • B. one
    • C. that number
    • D. ten
    • Discuss
    • 5. An encoder converts ________.

    • Options
    • A. noncoded information into coded form
    • B. coded information into noncoded form
    • C. HIGHs to LOWs
    • D. LOWs to HIGHs
    • Discuss
    • 6. What are the symbols used to represent digits in the binary number system?

    • Options
    • A. 0,1
    • B. 0,1,2
    • C. 0 through 8
    • D. 1,2
    • Discuss
    • 7. A DAC changes ________.

    • Options
    • A. an analog signal into digital data
    • B. digital data into an analog signal
    • C. digital data into an amplified signal
    • D. none of the above
    • Discuss
    • 8. What is the typical invalid voltage for a binary signal?

    • Options
    • A. 0.7?2.8 volts
    • B. 0.8?3 volts
    • C. 0.8?2 volts
    • D. 0.7?2.5 volts
    • Discuss
    • 9. Convert the fractional binary number 0000.1010 to decimal.

    • Options
    • A. 0.625
    • B. 0.50
    • C. 0.55
    • D. 0.10
    • Discuss
    • 10. Convert the fractional decimal number 6.75 to binary.

    • Options
    • A. 0111.1100
    • B. 0110.1010
    • C. 0110.1100
    • D. 0110.0110
    • Discuss


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