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  • Question

  • The invalid range for an input to TTL logic is from ________.


  • Options
  • A. 0 to 0.8 V
  • B. 1.2 to 1.6 V
  • C. 0.8 to 2.0 V
  • D. 2.0 to 5.0 V

  • Correct Answer
  • 0.8 to 2.0 V 

    • Digital Concepts problems

    Search Results

    • 1. A continually variable, proportional indicator is a(n) ________ representation.

    • Options
    • A. decimal
    • B. digital
    • C. unconstitutional
    • D. analog
      • Discuss
    • 2. The area represented by #4 in the given figure is the ________ level.


    • Options
    • A. HIGH
    • B. LOW
    • C. off
    • D. unacceptable
      • Discuss
    • 3. Once a signal is digitized, the information it contains does not ________ as it is processed.

    • Options
    • A. complain
    • B. stiffen
    • C. compress
    • D. deteriorate
      • Discuss
    • 4. A microcontroller would not be used in a(n) ________.

    • Options
    • A. VCR
    • B. automobile ignition system
    • C. antilock brakes
    • D. grandfather clock
      • Discuss
    • 5. A logic circuit that can store one bit of information is a ________.

    • Options
    • A. flip-flop
    • B. counter
    • C. gate
    • D. code converter
      • Discuss
    • 6. The control and arithmetic/logic units are often considered as one unit called the ________.

    • Options
    • A. central processing unit
    • B. inputs and outputs
    • C. microcomputer
    • D. arithmetic/logic unit
      • Discuss
    • 7. The decimal system is composed of ________ symbols.

    • Options
    • A. 2
    • B. 8
    • C. 10
    • D. 16
      • Discuss
    • 8. The systems shown in the given figure transfer data ________.


    • Options
    • A. serially
    • B. sequentially
    • C. in parallel
    • D. both serially and sequentially
      • Discuss
    • 9. The combination of waveforms consisting of the given figures 1 and 2 is generally referred to as ________.


    • Options
    • A. simultaneous waveforms
    • B. a timing diagram
    • C. two-phase waveforms
    • D. pulse waveforms
      • Discuss
    • 10. Demultiplexing is a logic function that ________.

    • Options
    • A. determines which of several inputs is the greatest
    • B. switches logic from one input to any of several output lines
    • C. switches logic from several inputs onto one output line
    • D. converts a code from one form to another
      • Discuss

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