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  • Question
  • A demultiplexer has ________.


  • Options
  • A. one data input and a number of selection inputs, and they have several outputs
  • B. one input and one output
  • C. several inputs and several outputs
  • D. several inputs and one output

  • Correct Answer
  • one data input and a number of selection inputs, and they have several outputs 


  • Digital Concepts problems


    Search Results


    • 1. A full subtracter circuit requires ________.

    • Options
    • A. two inputs and two outputs
    • B. two inputs and three outputs
    • C. three inputs and one output
    • D. three inputs and two outputs
    • Discuss
    • 2. A type of digital circuit technology that uses bipolar junction transistors is ________.

    • Options
    • A. TTL
    • B. CMOS
    • C. LSI
    • D. NMOS
    • Discuss
    • 3. Convert the fractional decimal number 6.75 to binary.

    • Options
    • A. 0111.1100
    • B. 0110.1010
    • C. 0110.1100
    • D. 0110.0110
    • Discuss
    • 4. Convert the fractional binary number 0000.1010 to decimal.

    • Options
    • A. 0.625
    • B. 0.50
    • C. 0.55
    • D. 0.10
    • Discuss
    • 5. 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
    • 6. What has happened to the advances in digital technologies over the past three decades?

    • Options
    • A. Slowed down considerably
    • B. Continued to increase, but at a decreasing rate
    • C. Made excellent progress
    • D. Nothing short of phenomenal
    • Discuss
    • 7. How many unique symbols are used in the decimal number system?

    • Options
    • A. One
    • B. Nine
    • C. Ten
    • D. Unlimited
    • Discuss
    • 8. With regard to an AND gate, which statement is true?

    • Options
    • A. An AND gate has two inputs and one output.
    • B. An AND gate has two or more inputs and two outputs.
    • C. If one input to a 2-input AND gate is HIGH, the output reflects the other input.
    • D. A 2-input AND gate has eight input possibilities.
    • Discuss
    • 9. Logically, the output of a NOR gate would have the same Boolean expression as a(n):

    • Options
    • A. NAND gate immediately followed by an inverter
    • B. OR gate immediately followed by an inverter
    • C. AND gate immediately followed by an inverter
    • D. NOR gate immediately followed by an inverter
    • Discuss
    • 10. Which of the following equations would accurately describe a four-input OR gate when A = 1, B = 1, C = 0, and D = 0?

    • Options
    • A. 1 + 1 + 0 + 0 = 01
    • B. 1 + 1 + 0 + 0 = 1
    • C. 1 + 1 + 0 + 0 = 0
    • D. 1 + 1 + 0 + 0 = 00
    • Discuss


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