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Home ‣ Digital Electronics ‣ Digital Concepts See What Others Are Saying!
  • Question

  • Digital systems require that voltage levels change between high and low.


  • Options
  • A. True
  • B. False

  • Correct Answer
  • True 

    • More questions

    • 1. One example of the use of an S-R flip-flop is as a(n):

    • Options
    • A. racer
    • B. astable oscillator
    • C. binary storage register
    • D. transition pulse generator
      • Discuss
    • 2. Packages are used to contain ________ and other information that must be available to all entities in the design file.

    • Options
    • A. types
    • B. vectors
    • C. components
    • D. variables
      • Discuss
    • 3. A method of converting decimal to binary is by successive division.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. A plot of voltage versus time is called a timing diagram.

    • Options
    • A. True
    • B. False
      • Discuss
    • 5. Convert 11001010001101012 to hexadecimal.

    • Options
    • A. 121035
    • B. CA35
    • C. 53AC1
    • D. 530121
      • Discuss
    • 6. There are four possible combinations for subtracting two binary numbers.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. A truth table with output columns numbered 0?15 may be for which type of decoder IC?

    • Options
    • A. hexadecimal 1-of-16
    • B. dual octal outputs
    • C. binary-to-hexadecimal
    • D. hexadecimal-to-binary
      • Discuss
    • 8. What is the indication of a short to ground in the output of a driving gate?

    • Options
    • A. Only the output of the defective gate is affected.
    • B. There is a signal loss to all load gates.
    • C. The node may be stuck in either the HIGH or the LOW state.
    • D. The affected node will be stuck in the HIGH state.
      • Discuss
    • 9. The storage element for a static RAM is the ________.

    • Options
    • A. diode
    • B. resistor
    • C. capacitor
    • D. flip-flop
      • Discuss
    • 10. In the keypad encoder, the ________ detects when a key is pressed.

    • Options
    • A. ring counter
    • B. MOD-6 counter
    • C. BCD counter
    • D. freeze bit
      • Discuss

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