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  • Question
  • What is the significance of the inverted triangles on the outputs of the device in the given figure?

    What is the significance of the inverted triangles on the outputs of the device in the given figure?


  • Options
  • A. They represent inverters and mean that the outputs are active-LOW.
  • B. They represent buffers and mean that the outputs can drive 40 TTL loads, instead of the normal 10.
  • C. It means that the outputs will be active only if a change has occurred at that memory location since the last read/write cycle.
  • D. The outputs are tristated.

  • Correct Answer
  • The outputs are tristated. 


  • More questions

    • 1. The programming technologies that are used in FPGA devices include SRAM, flash, and antifuse, with flash being most common.

    • Options
    • A. True
    • B. False
    • Discuss
    • 2. Which of the following is not generally associated with flip-flops?

    • Options
    • A. Hold time
    • B. Propagation delay time
    • C. Interval time
    • D. Set up time
    • Discuss
    • 3. A 555 operating as a monostable multivibrator has an R1 of 220 kΩ. Determine C1 for a pulse width of 4 ms.

    • Options
    • A. 0.017 µF
    • B. 17 pF
    • C. 170 pF
    • D. 1,700 µF
    • Discuss
    • 4. An effective time delay device can be constructed by using the propagation delay characteristic of parallel shift registers.

    • Options
    • A. True
    • B. False
    • Discuss
    • 5. If a 3-input NOR gate has eight input possibilities, how many of those possibilities will result in a HIGH output?

    • Options
    • A. 1
    • B. 2
    • C. 7
    • D. 8
    • Discuss
    • 6. The complex programmable logic device (CPLD) features a(n) ________ type of memory.

    • Options
    • A. volatile
    • B. nonvolatile
    • C. EPROM
    • D. volitile EPROM
    • Discuss
    • 7. Digital electronics must use a numbering system that has more than ten digits.

    • Options
    • A. True
    • B. False
    • Discuss
    • 8. The final step in a design flow in which the logic design is implemented in the target device is called ________.

    • Options
    • A. design entry
    • B. simulation
    • C. downloading
    • D. compiling
    • Discuss
    • 9. Which of the following is NOT a type of memory?

    • Options
    • A. RAM
    • B. ROM
    • C. FPROM
    • D. EEPROM
    • Discuss
    • 10. Unused TTL inputs should be tied LOW.

    • Options
    • A. True
    • B. False
    • Discuss


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