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Home Digital Electronics Programmable Logic Device See What Others Are Saying!
  • Question
  • The Boolean expression AB + CD is an example of ________.


  • Options
  • A. PAL
  • B. GAL
  • C. SOP
  • D. POS

  • Correct Answer
  • SOP 


  • More questions

    • 1. The proliferation of small handheld consumer equipment such as digital video cameras, cellular phones, handheld computers (________), portable audio systems, and other devices has created a need for logic circuits in very small packages.

    • Options
    • A. HDLs
    • B. GDAs
    • C. PDAs
    • D. TTLs
    • Discuss
    • 2. The given circuit is a(n) ________.


    • Options
    • A. three-bit synchronous binary counter
    • B. eight-bit asynchronous binary flip-flop
    • C. two-bit asynchronous binary counter
    • D. four-bit asynchronous binary counter
    • Discuss
    • 3. The process of designing a synchronous counter that will count in a nonbinary manner is primarily based on:

    • Options
    • A. external logic circuits that decode the various states of the counter to apply the correct logic levels to the J-K inputs
    • B. modifying BCD counters to change states on every second input clock pulse
    • C. modifying asynchronous counters to change states on every second input clock pulse
    • D. elimination of the counter stages and the addition of combinational logic circuits to produce the desired counts
    • Discuss
    • 4. Which of the following is not a basic Boolean operation?

    • Options
    • A. OR
    • B. NOT
    • C. AND
    • D. FOR
    • Discuss
    • 5. The two's complement of 00001111 is ________.

    • Options
    • A. 11111111
    • B. 11110000
    • C. 11110001
    • D. 11110111
    • Discuss
    • 6. A type of memory that is accessed serially (one location after the other) is a ________.

    • Options
    • A. ROM
    • B. read/write memory
    • C. shift register
    • D. PLD
    • Discuss
    • 7. Dynamic RAMs store information by using ________.

    • Options
    • A. magnetism
    • B. flip-flops
    • C. latches
    • D. capacitors
    • Discuss
    • 8. A type of shift register that requires access to the Q outputs of all stages is ________.

    • Options
    • A. parallel in/serial out
    • B. serial in/parallel out
    • C. serial in/serial out
    • D. a bidirectional shift register
    • Discuss
    • 9. For a 3-input NAND gate, with the input waveforms as shown below, which output waveform is correct?


    • Options
    • A. a
    • B. b
    • C. c
    • D. d
    • Discuss
    • 10. A 4-bit ring counter is loaded with a single 1. The frequency of any given output is ________.

    • Options
    • A. the same as the clock
    • B. twice the clock frequency
    • C. one-half the clock frequency
    • D. one-fourth the clock frequency
    • Discuss


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