You wish to turn on two LEDs in the middle of the display, so the first thing you will do is set AL to _________.   a 00   b 11   c 18   d 55

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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QUESTION 1

  1. You wish to turn on two LEDs in the middle of the display, so the first thing you will do is set AL to _________.
      a
    00
      b
    11
      c
    18
      d
    55

    QUESTION 3

    1. Signaling interrupts is an effective way to deal with interrupts if _______.

        a

      the microprocessor is dedicated to a task

        b

      a minimal number of chips is needed

        c

      polling is preferred

        d

      there are many devices installed on the system

      QUESTION 4

      1. If an ISR is called as a result of the instruction "INT 32", then it is __________.
          a
        an invalid operation
          b
        a high priority interrupt
          c
        a software interrupt
          d
        a hardware interrupt

         

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