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MindTap Computing for Vermaat's Enhanced Discovering Computers, 1st Edition, [Instant Access], 1 term (6 months)
1st Edition
ISBN: 9781285845937
Author: Misty E. Vermaat
Publisher: Cengage Archive
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Chapter 4, Problem 30CT
Program Plan Intro
Management tools: File, disk and system management tools are used in order to protect and manage a computer, the devices connected to it and the software. One of the tools of file, disk and system management tool is a PC maintenance tool.
PC maintenance tool: Personal computers require continuous maintenance in order to enhance its performance. Some of the PC maintenance tools are: PC cleaning tools, defragmentation tools, uninstaller applications, and so on.
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1.[30 pts] Computers generate color pictures on a video screen or liquid crystal display by
mixing three different colors of light: red, green, and blue. Imagine a simple scheme, with
three different lights, each of which can be turned on or off, projecting onto a glass screen:
We can create eight different colors based on the absence (0) or presence (1) of light
sources R,G and B:
R
G
B
Color
0
0
0
Black
0
0
1
Blue
0
1
0
Green
0
1
1
Cyan
1
0
0
Red
1
0
1
Magenta
1
1
1
0
Yellow
1
White
1
Each of these colors can be represented as a bit vector of length 3, and we can apply
Boolean operations to them.
a. The complement of a color is formed by turning off the lights that are on and turning
on the lights that are off. What would be the complement of each of the eight colors
listed above?
b. Describe the effect of applying Boolean operations on the following colors:
Λ
1. Red(100) ^ Magenta(101)= Blue(001)
2. Bue(001) | Green(010)=
3. Yellow(100) & Cyan(011)=
2.[30 pts] Perform the following…
D. S. Malik, Data Structures Using C++, 2nd Edition, 2010
Methods (Ch6) - Review
1. (The MyRoot method) Below is a manual implementation of the Math.sqrt() method in Java.
There are two methods, method #1 which calculates the square root for positive integers, and
method #2, which calculates the square root of positive doubles (also works for integers).
public class SquareRoot {
public static void main(String[] args) {
}
// implement a loop of your choice here
// Method that calculates the square root of integer variables
public static double myRoot(int number) {
double root;
root=number/2;
double root old;
do {
root old root;
root (root_old+number/root_old)/2;
} while (Math.abs(root_old-root)>1.8E-6);
return root;
}
// Method that calculates the square root of double variables
public static double myRoot(double number) {
double root;
root number/2;
double root_old;
do {
root old root;
root (root_old+number/root_old)/2;
while (Math.abs (root_old-root)>1.0E-6);
return root;
}
}
Program-it-Yourself: In the main method, create a program that…
Chapter 4 Solutions
MindTap Computing for Vermaat's Enhanced Discovering Computers, 1st Edition, [Instant Access], 1 term (6 months)
Ch. 4 - Prob. 1SGCh. 4 - Prob. 2SGCh. 4 - Prob. 3SGCh. 4 - Prob. 4SGCh. 4 - _____ software performs functions specific to a...Ch. 4 - Prob. 6SGCh. 4 - List any restrictions for shareware, freeware,...Ch. 4 - Prob. 8SGCh. 4 - Prob. 9SGCh. 4 - Prob. 10SG
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