EBK ENHANCED DISCOVERING COMPUTERS & MI
1st Edition
ISBN: 8220100606922
Author: Vermaat
Publisher: YUZU
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Expert Solution & Answer
Chapter 5, Problem 21SG
Explanation of Solution
Use of verification system by a company:
Companies use the verification system in the following manner. They are mentioned below:
Fingerprint reader:
Fingerprint reader is also referred to as fingerprint scanner that scans or captures the fingerprint bends and indentations.
- Some companies use the fingerprint reader to provide the security to doors, systems, and software.
- Some fingerprint software are installed into a system, mobile phone, and so on to lock and unlock the system.
Face recognition system:
Face recognition system helps to capture the images of face.
- It compares with computer image. If the faces match, then the person or user is a legitimate person. Otherwise, the person or user is an unauthorized person.
- Some mobile devices use this type of verification to unlock the mobile.
- Some companies use this recognition system to provide the security to access the room.
Hand geometry system:
The hand geometry system helps to capture the hand shape and size.
- It compares the captured image of hand with computer images.
- If it matches, then the user is a legitimate person. Otherwise, the person or user is an unauthorized person.
- It can be used in colleges, hospitals, daycare centers, and so on.
- This type of recognition is used for huge companies to track the timing and attendance of the employees.
Voice verification system:
Voice verification system helps to compare the legitimate voice with a stored pattern of voice in the computer...
Program Plan Intro
Biometric devices:
Biometric device is a device that helps to authenticate the identity of a person by translating the fingerprint into a digital code.
- The code that is given by a person for identification is compared with a digital code that is present in a computer, and it helps to check the behavioral and physical features of the devices.
- If a code matches with a computer code, then access to a computer is given to an individual.
- When it does not match, access to computer is not given to that individual.
Expert Solution & Answer
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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:
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G
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0
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1
0
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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)
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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 5 Solutions
EBK ENHANCED DISCOVERING COMPUTERS & MI
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