EBK ACTIVITIES MANUAL FOR PROGRAMMABLE
EBK ACTIVITIES MANUAL FOR PROGRAMMABLE
5th Edition
ISBN: 8220102795983
Author: Petruzella
Publisher: YUZU
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Chapter 13, Problem 11RQ
Program Plan Intro

Voltage spike:

  • Voltage spike refers to a sudden increase in voltage which lasts for less than 3 nanoseconds.
  • It is also known as voltage surge.
  • A corresponding increase in current is produced by the effect of a voltage spike.
  • Some voltage spikes are also created by current sources.

Diode:

  • Diode refers to a two-terminal electrical device which conducts current primarily in one direction.
  • It has ideally zero resistance in one direction and ideally infinite in the other direction.

Inductive loads:

  • The function of an inductive load is to convert the current into a magnetic field.
  • Inductive reactance will resist changes in current, and, when measuring current, it lags the voltage.
  • Motors, transformers, and chokes are some of the example devices that produce inductive loads.
  • Inductance is measured in Henry.

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EX:[AE00]=fa50h number of ones =1111 1010 0101 0000 Physical address=4AE00h=4000h*10h+AE00h Mov ax,4000 Mov ds,ax; DS=4000h mov ds,4000 X Mov ax,[AE00] ; ax=[ae00]=FA50h Mov cx,10; 16 bit in decimal Mov bl,0 *: Ror ax,1 Jnc ** Inc bl **:Dec cx Jnz * ;LSB⇒CF Cf=1 ; it jump when CF=0, will not jump when CF=1 HW1: rewrite the above example use another way
EX2: Write a piece of assembly code that can count the number of ones in word stored at 4AE00h
Write a program that simulates a Magic 8 Ball, which is a fortune-telling toy that displays a random response to a yes or no question. In the student sample programs for this book, you will find a text file named 8_ball_responses.txt. The file contains 12 responses, such as “I don’t think so”, “Yes, of course!”, “I’m not sure”, and so forth. The program should read the responses from the file into a list. It should prompt the user to ask a question, then display one of the responses, randomly selected from the list. The program should repeat until the user is ready to quit. Contents of 8_ball_responses.txt:  Yes, of course! Without a doubt, yes. You can count on it. For sure! Ask me later. I'm not sure. I can't tell you right now. I'll tell you after my nap. No way! I don't think so. Without a doubt, no. The answer is clearly NO. (You can access the Computer Science Portal at www.pearsonhighered.com/gaddis.)
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