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Home Digital Electronics Programmable Logic Device Comments

  • Question
  • A macrocell basically contains ________.


  • Options
  • A. a programmable AND-OR gate array and some input buffers
  • B. an OR-gate array and some output logic
  • C. an AND-OR gate array and some output logic
  • D. licensed programming

  • Correct Answer
  • an OR-gate array and some output logic 


  • Programmable Logic Device problems


    Search Results


    • 1. The output of this circuit is always ________.


    • Options
    • A. 1
    • B. 0  
    • C. A
    • D. A
    • Discuss
    • 2. GAL is an acronym for ________.

    • Options
    • A. Generic Array Logic
    • B. General Array Logic
    • C. Giant Array Logic
    • D. Generic Analysis Logic
    • Discuss
    • 3. The GAL16V8 has:

    • Options
    • A. 16 dedicated inputs.
    • B. 8 special function pins.
    • C. 8 pins that are used as inputs or outputs.
    • D. All of the above
    • Discuss
    • 4. A slice consists of ________.

    • Options
    • A. only two logic cells
    • B. between 2 and 8 logic cells
    • C. up to 16 logic cells
    • D. a single CLB
    • Discuss
    • 5. What is the status of a tristate output buffer on a MAX7000S family device?

    • Options
    • A. It is permanently enabled or disabled.
    • B. It is controlled by one of the two global output enable pins.
    • C. It is controlled by other inputs or functions generated by other macrocells.
    • D. All of the above
    • Discuss
    • 6. Product terms are the outputs of which type of gate within a PLD array?

    • Options
    • A. OR
    • B. XOR
    • C. AND
    • D. flip-flop
    • Discuss
    • 7. A circuit that implements a combinational logic function by storing a list of output values that correspond to all possible input combinations is a(n) ________.

    • Options
    • A. output logic macrocell
    • B. look-up table
    • C. parallel logic expander
    • D. logic element
    • Discuss
    • 8. The output of this circuit is always ________.


    • Options
    • A. 1
    • B. 0 
    • C. A
    • D. A
    • Discuss
    • 9. Which of the following is true?

    • Options
    • A. Altera uses PAL architecture and Xilinx uses PLA architecture.
    • B. Altera uses PLA architecture and Xilinx uses PAL architecture.
    • C. Altera and Xilinx both use PAL architecture.
    • D. Altera and Xilinx both use PLA architecture.
    • Discuss
    • 10. A GAL is essentially a ________.

    • Options
    • A. non-reprogrammable PAL
    • B. PAL that is programmed only by the manufacturer
    • C. very large PAL
    • D. reprogrammable PAL
    • Discuss


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