Given that a random variable X has a mean E[X] = 1 and variance Var[X] = 1. Find P[X ≥ 2] if X has an exponential distribution; P[X ≥ 2] if X has a normal distribution; P[X ≥ 2] if X has a distribution, for each of them. Let's solve the problem.
i) Find P[X ≥ 2] if X has an exponential distribution.In an exponential distribution, the probability of the variable being greater than or equal to a certain value can be found using the complementary probability of the variable being less than that value.
P[X ≥ 2] = 1 - P[X < 2]
Since the mean of X is equal to 1, we have;
1/λ = 1λ = 1P[X ≥ 2] = 1 - P[X < 2] = 1 - [1 - e^(-λx)] = e^(-λx) = e^(-1×2) = e^(-2)
ii) Find P[X ≥ 2] if X has a normal distribution.In a normal distribution, we standardize the variable using the standard deviation and the mean;
Z = (X - μ) / σ
Now, we can find the probability using the standard normal distribution table.
P(X ≥ 2) = P(Z ≥ (2 - 1) / 1) = P(Z ≥ 1) = 0.1587 (using standard normal distribution table)
iii) Find P[X ≥ 2] if X has a distribution, for each of them.The variable X has a mean of 1 and a variance of 1;
mean, μ = 1 and variance, σ² = 1
The standardized variable Z is given as;
Z = (X - μ) / σ = (X - 1) / 1 = X - 1P(X ≥ 2) = P(Z ≥ (2 - 1) / 1) = P(Z ≥ 1) = P(X - 1 ≥ 1) = P(X ≥ 2)
We can calculate this probability using the standard normal distribution table. Here, Z = 1 and therefore
P(X ≥ 2) = P(Z ≥ 1) = 0.1587
Therefore, the three probabilities, P[X ≥ 2] if X has an exponential distribution; P[X ≥ 2] if X has a normal distribution; P[X ≥ 2] if X has a distribution are e^-2, 0.1587 and 0.1587, respectively.
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Hello, Can someone help me write a code from scratch/ or that is different from the ones online and not the examples for an ESP32 to build a video streaming web server with the ESP32-CAM that you can access on your local network?
Yes, it is possible to write a code from scratch to build a video streaming web server with the ESP32-CAM that you can access on your local network.
Step 1: Set up the development environment
To begin with, you need to set up the development environment. You can use the Arduino IDE or PlatformIO for this purpose. Once you have installed these tools, you need to configure them to work with the ESP32-CAM.
Step 2: Install the required librariesThe next step is to install the required libraries. You need to install the following libraries:
ESPAsyncWebServerESPAsyncTCPAsyncTCPWifi
Step 3: Write the code
After installing the required libraries, you can begin writing the code. The code for this project involves several parts. First, you need to set up the camera and capture the frames. Next, you need to set up the web server and handle the HTTP requests. Finally, you need to stream the video frames to the web client.
To stream the video frames, you can use the MJPEG format. MJPEG is a video format that consists of a series of JPEG images. To stream the video, you need to send the images one by one to the web client. The web client then displays the images as a video stream.
Step 4: Test the code
After writing the code, you need to test it. You can connect to the video streaming web server using a web browser. You should be able to see the video stream in real-time. If there are any issues, you can debug the code and make the necessary changes to fix the problem.
In conclusion, writing a code from scratch to build a video streaming web server with the ESP32-CAM is possible. It involves setting up the development environment, installing the required libraries, writing the code, and testing the code.
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What would happen for the following calls on this code: int quiz3(int a, int b, double c) { if (a < c) { return a * b; } else if (b< c) { return a + b; } return a - b; } 1. quiz3(2, 2, 3.0) 2. quiz3(3, 2, 3.0) 3. quiz3(10, 10, 10) 4. quiz3(8, 5, 4.99) 5. quiz4( 5, 10, 2.5)
The given code is: int quiz3(int a, int b, double c) { if (a < c) { return a * b; } else if (b < c) { return a + b; } return a - b; } Now, we will calculate the output of the given code for the following inputs: 1. quiz3(2, 2, 3.0)Explanation: Here, a = 2, b = 2, and c = 3.0.Since 2 < 3.0 is True, a * b will be returned.
The output of the code for this call is: 4 2. quiz3(3, 2, 3.0) Here, a = 3, b = 2, and c = 3.0.Since 3 < 3.0 is False, but 2 < 3.0 is True, so a + b will be returned. The output of the code for this call is: 5 3. quiz3(10, 10, 10)Explanation: Here, a = 10, b = 10, and c = 10.Since 10 < 10 is False, and 10 < 10 is False as well, so a - b will be returned. The output of the code for this call is: 0 4. quiz3(8, 5, 4.99) Here, a = 8, b = 5, and c = 4.99.Since 8 < 4.99 is False, and 5 < 4.99 is False as well, so a - b will be returned. The output of the code for this call is: 3 5.
quiz4(5, 10, 2.5) There is no function named quiz4 in the given code. Hence, quiz4(5, 10, 2.5) will result in an error. The for each quiz3 call are: 1. quiz3(2, 2, 3.0) returns 4. 2. quiz3(3, 2, 3.0) returns 5. 3. quiz3(10, 10, 10) returns 0. 4. quiz3(8, 5, 4.99) returns 3. The quiz4 call will result in an error.
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Dissimilar metals should not be used in a roof primarily because: O a. They will not look well together O b. Different tools are needed for different metals O c. Galvanic corrosion is likely to result
Dissimilar metals should not be used in a roof primarily because **galvanic corrosion is likely to result**.
When two different metals come into contact in the presence of an electrolyte (such as rainwater or moisture), an electrochemical reaction called galvanic corrosion can occur. This reaction happens due to the difference in electrical potential between the metals. One metal acts as an anode, undergoing corrosion, while the other metal acts as a cathode, remaining protected.
In the context of a roof, which is exposed to various weather conditions, including rain and humidity, the presence of dissimilar metals in close proximity can create a galvanic cell. This can lead to accelerated corrosion of one or both of the metals involved. Over time, this corrosion can compromise the structural integrity of the roof, leading to leaks, damage, and reduced lifespan.
It is important to note that the appearance or the need for different tools are not the primary reasons why dissimilar metals should not be used in a roof. While aesthetics and practical considerations may also play a role, the main concern is the potential for galvanic corrosion and the associated detrimental effects on the roof's performance and durability. To avoid galvanic corrosion, it is recommended to use compatible metals or employ proper insulation or barriers between dissimilar metals to prevent direct contact and the subsequent electrochemical reactions.
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The following problems deal with translating from C to MIPS. Assume that the variables f, g, h, i, and j are assigned to registers $s0, $s1, $s2, $s3, and $s4, respectively. Assume that the base address of the arrays A and B are in registers $s6 and $s7, respectively. a. f = B[8] + A[12] b. f = j - A[2] For the C statements above, what is the corresponding MIPS assembly code? For the C statements above, how many MIPS assembly instructions are needed to perform each C statement? . For the C statements, how many different registers are needed to carry out the C statements.
Part (a) MIPS assembly code:For the given C statement,f = B[8] + A[12]The corresponding MIPS assembly code is shown below:lw $t0, 32($s7) # Load B[8] into $t0 lw $t1, 48($s6) # Load A[12] into $t1 add $s0, $t0, $t1 # f = $t0 + $t1In this MIPS code, we have used two lw instructions and one add instruction.
Therefore, the total number of instructions used for this C statement is 3.Part (b) MIPS assembly code:For the given C statement,f = j - A[2]The corresponding MIPS assembly code is shown below:lw $t0, 8($s3) # Load j into $t0 lw $t1, 8($s6) # Load A[2] into $t1 sub $s0, $t0, $t1 # f = $t0 - $t1In this MIPS code, we have used two lw instructions and one sub instruction. Therefore, the total number of instructions used for this C statement is 3.
In this problem, we are required to write MIPS assembly code for the given C statements, which involve reading data from the arrays and assigning values to the variable. We also need to find the number of MIPS instructions required to perform each C statement and the number of different registers required to execute them.Part (a) involves reading the 8th element of array B and the 12th element of array A, adding them, and storing the result in variable f. To read the data from the arrays, we have used the lw (load word) instruction. The syntax for the lw instruction is lw $t, offset($s), where $t is the temporary register used to hold the data, offset is the memory address offset from the base address stored in the register $s. In this case, we have loaded B[8] into $t0 and A[12] into $t1. After that, we have used the add instruction to add the contents of $t0 and $t1 and store the result in register $s0, which is assigned to variable f. Therefore, a total of three MIPS instructions (two lw and one add) are used to perform this C statement. Part (b) involves subtracting the 2nd element of array A from variable j and storing the result in variable f.
To read the data from the arrays, we have used the law instruction. The syntax for the law instruction is lw $t, offset($s), where $t is the temporary register used to hold the data, offset is the memory address offset from the base address stored in the register $s. In this case, we have loaded j into $t0 and A[2] into $t1. After that, we have used the sub instruction to subtract the contents of $t1 from $t0 and store the result in register $s0, which is assigned to variable f. Therefore, a total of three MIPS instructions (two lw and one sub) are used to perform this C statement.The number of different registers required to execute these C statements is five, which are assigned to variables f, g, h, i, and j (registers $s0, $s1, $s2, $s3, and $s4, respectively).
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The three counters below are used for building the minute (the two FF's at the right) and the hour sections (the one on the left) of a digital clock.
The person who cascaded them made a mistake. Where is the mistake in the diagram? Explain your answer, where the mistake is and how it should be fixed.
Given the diagram of the three counters below, we are to determine the mistake made by the person who cascaded them and how it can be fixed. The mistake is in the second counter from the left.
The explanation of the mistake is that the counter should be a 6-stage counter, not a 4-stage counter as shown in the diagram. The counter on the left is a 24-hour counter, which can count from 00 to 23. The two counters on the right are 60-minute counters, which can count from 00 to 59.
Therefore, the mistake is that the second counter on the right should be a 6-stage counter to correctly count from 00 to 59, but it is a 4-stage counter, which can only count from 00 to 15. This will make it impossible to properly display minutes from 16 to 59.To fix the mistake, we need to replace the 4-stage counter with a 6-stage counter.
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What Is The Laplace Transform Of The Following? Y(T) = 5 Sin U(T-1) Πt-2 3 0 E^T Y(S) = 3.95π/3___ ) E^-S - 3.1 ( S² + Π² 9 S) E^-S S
Laplace transform is a mathematical technique that is used to transform a function of a real variable t (often time) to a function of a complex variable s (usually frequency).
The Laplace Transform of a time function y(t) is given by Y(s) = ∫ [ 0 to ∞ ] y(t) e^(-st) dt Taking the Laplace transform of the given function: Y(t) = 5 sin u(t-1) πt-2 between 0 and 3, and e^t First, we will write the function as: Y(t) = 5 sin πt u(t-1) e^(-2t)Taking the Laplace transform of this function, we get: Y(s) = 5 ∫ [1 to ∞] sin πt e^(-st) dt e^(-2s)Y(s) = 5 ∫ [1 to ∞] sin πt e^(-(s+2)t) dt Using the formula to calculate the Laplace transform of a sine function: ∫ [0 to ∞] sin(wt) e^(-st) dt = w/(s^2 + w^2)We get:Y(s) = 5 π/(s+2)^2 + π^2/[(s+2)^2 + π^2]This can be further simplified as:Y(s) = 3.95π/3(s + 1)e^(-s) - 3.1(s² + π²)/(s+9) e^(-s)
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For this final project proposal, we need to specify
your virtual company
what the database is tracking
a minimum of four tables
at least five fields in each table
At least one field that has sensitive data and/or needs to be encrypted
we can choose to encrypt an entire table
or, choose to encrypt the entire database
specify ten users and their duties at the firm
specify a preliminary look at what they need access to and what privileges they need
This should be two to three pages including tables. Note, we do not need to implement this to database management systems yet. In the tables, use document/excel to provide the data.
Requirements:
Describe the company
Outline the tables and show relations
Specify the five fields with sensitive data, decide how you will encrypt
Specify the ten users, duties and privileges
The proposal should be two to three pages (feel free to have more pages)
XYZ Solutions, a virtual company specializing in software development and IT services, plans to implement a comprehensive database system with four interconnected tables to enhance operational efficiency and establish meaningful data relationships.
The first table, "Employees," will store information about our workforce, including their names, contact details, positions, departments, and employee IDs. The second table, "Projects," will track the various projects undertaken by our company, with fields such as project ID, name, start date, end date, and assigned team. The third table, "Clients," will hold details about our clients, including their names, contact information, company affiliation, and project requirements. Lastly, the fourth table, "Invoices," will record financial transactions, including invoice IDs, client information, project details, payment status, and due dates.
Sensitive data, such as employees' Social Security numbers in the "Employees" table, will be identified and encrypted to ensure the security and privacy of this information. We will employ industry-standard encryption algorithms to safeguard the sensitive field, ensuring that only authorized personnel with the appropriate decryption privileges can access it.
We have identified ten key users within our company, each assigned specific duties and requiring different levels of access to the database. The users and their respective roles include:
1. Administrator - Responsible for managing user accounts, database maintenance, and overall system security. Requires full privileges and access to all tables.
2. Project Manager - Oversees project-related data, including tracking progress, resource allocation, and client communications. Requires read/write access to the "Projects" and "Clients" tables.
3. HR Manager - Manages employee information, handles recruitment, and tracks performance evaluations. Requires read/write access to the "Employees" table.
4. Finance Officer - Handles invoicing, payment processing, and financial reporting. Requires read/write access to the "Invoices" table.
5. Sales Representative - Maintains client information, generates leads, and tracks sales activities. Requires read/write access to the "Clients" table.
6. Team Lead - Supervises project teams, assigns tasks, and monitors progress. Requires read/write access to the "Projects" table.
7. Developer - Implements software solutions, updates project details, and collaborates with team members. Requires read/write access to the "Projects" table.
8. Quality Assurance Specialist - Conducts testing and ensures software quality. Requires read/write access to the "Projects" table.
9. Technical Support Agent - Provides customer support and handles technical queries. Requires read access to the "Clients" table.
10. Executive Manager - Oversees company operations, reviews project status, and makes strategic decisions. Requires read-only access to all tables.
By assigning specific privileges to each user, we ensure data security, privacy, and efficient access management within the database system.
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8. Write a program that reads a file one character at a time and prints out how many times each of the vowels a e io u occur (in upper- or lowercase). Complete the following code. Vowels.java 1 import java.io.File; 2 import java.io.FileNotFoundException; 3 import java.io.PrintWriter; 4 import java.util.Scanner; 5 6 public class Vowels 7 { 8 public static void main(String[] args) throws FileNotFoundException 9 { 10 String vowels = "aeiou"; 11 int[] counters = new int [vowels. length()]; 12 13 Scanner console = new Scanner(System.in); 14 System.out.print("Input file: "); 15 String inputFileName = console.next(); 16 Scanner in = ...; 17 18 19 while (...) 20 { 21 String ch = : : : 22 int n = vowels.indexOf(ch.toLowerCase(); 23 24 } 25 26 in.close(); 27 28 for (int i = 0; i < vowels.length(); i++) 29 { 30 System.out.println(vowels.charAt(i) + ": " + counters[i]); 31 } 32 33 }
The following code snippet reads a file one character at a time and prints out the frequency of each of the vowels a e i o u, in either upper- or lowercase.
Let's take a look at the code:import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;
public class Vowels {
public static void main(String[] args) throws FileNotFoundException {
String vowels = "aeiou";
int[] counters = new int[vowels.length()];
Scanner console = new Scanner(System.in);
System.out.print("Input file: ");
String inputFileName = console.next();
Scanner in = new Scanner(new File(inputFileName));
while (in.hasNext()) {
String ch = in.next();
int n = vowels.indexOf(ch.toLowerCase());
if (n != -1) {
counters[n]++;
}
}
in.close();
for (int i = 0; i < vowels.length(); i++) {
System.out.println(vowels.charAt(i) + ": " + counters[i]);
}
}
}
At first, the code initializes a string called vowels with the letters a, e, i, o, and u.
Finally, the program loops through the vowels string, printing each character and its count in the counters array.
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29. A binary search tree where each node has either 0 or 1 subtrees is said to be
a. Perfect
b. Balanced
c. Degenerate
d. Complete
30. A binary search tree where the nodes at all levels except the lowest are filled, and at the lowest level, the values are filled from left to right is said to be
a. Perfect
b. Balanced
c. Degenerate
d. Complete
31. logic_error, runtime_error, syntax_error and bad_cast are all examples of standard C++ exceptions
. a. True
b. False
32. All standard exceptions in C++ are derived from the exception class
. a. True
b. False
33. User defined exception classes can be created by deriving the class from the exception class and overriding the "error_message" function
. a. True
b. False
34. A data structure where elements are processed in the same order in which they are added to the container is known as a
a. Stack
b. Queue
c. Linked lis
t d. Deque
35. A data structure where elements are processed in the opposite order in which they are added to the container is known as a
a. Stack
b. Queue
c. Linked list
d. Deque
29. The binary search tree where each node has either 0 or 1 subtrees is said to be Degenerate.
30. The binary search tree where the nodes at all levels except the lowest are filled, and at the lowest level, the values are filled from left to right is said to be Perfect.
31. True.
32. True.
33. True. User-defined exception classes can be created by deriving the class from the exception class and overriding the error_message function.
34. A data structure where elements are processed in the same order in which they are added to the container is known as a Queue.
35. A data structure where elements are processed in the opposite order in which they are added to the container is known as a Stack.
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CL04: Assume that you are working as a IT engineer in a company. You are in the move towards deplying appropriate authentication system for the company. You are planning to use 802.1X authentication system. You need to propose this system to the company by addressing the following questions What is 802.1X authentication mechanism 24 Marks What is the role of the following components in 802.1X authentication system?6 Marks 1. Authentication Server 2. Supplicant 3. Authenticator
802.1X is an industry-standard authentication protocol used in computer networks to provide secure network access control. It is a port-based authentication mechanism that allows a network device (the Authenticator) to authenticate a user or another network device (the Supplicant) before granting access to the network.
The 802.1X authentication process involves three main components: the Authentication Server, the Supplicant, and the Authenticator.
Role of the components in 802.1X authentication system:
Authentication Server: The Authentication Server is responsible for authenticating the Supplicant's identity. It verifies the credentials provided by the Supplicant and determines whether access should be granted or denied. The server stores user credentials and authentication policies, such as username/password combinations or digital certificates. It plays a crucial role in validating the Supplicant's identity and enforcing access control policies.
Supplicant: The Supplicant is the client device or user that requests network access. It could be a computer, smartphone, or any network-enabled device. The Supplicant initiates the authentication process by sending credentials or certificates to the Authenticator. It waits for a response from the Authenticator to determine if access is granted or further action is required. The Supplicant can be configured to support different authentication methods, such as username/password, digital certificates, or smart cards.
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Write down context-free grammars for the following language where ∑={x,y} and starting non-terminal is S.
iii. L = {w : w mod 4 >0}
The context-free grammar (CFG) provided represents the language L = {w : w mod 4 > 0}, where w is a string over the alphabet ∑ = {x, y}. The grammar consists of non-terminals S, A, B, C, D, E, F, and G, and terminals x and y. Each non-terminal represents a different modulo value from 1 to 7. The production rules recursively generate strings of 'x' and 'y' symbols, ensuring that the generated strings have a modulo value greater than 0 when divided by 4.
A context-free grammar (CFG) for the language L = {w : w mod 4 > 0} over the alphabet ∑ = {x, y} can be defined as follows:
S -> Ax | Ay
A -> Bx | By
B -> Cx | Cy
C -> Dx | Dy
D -> Ex | Ey
E -> Fx | Fy
F -> Gx | Gy
G -> x | y
The grammar starts with the non-terminal S, which represents the starting symbol of the language. The production rules define the structure of the language.In this grammar, each non-terminal (A, B, C, D, E, F, G) represents a modulo value from 1 to 7, respectively. Each non-terminal generates either an 'x' or a 'y' symbol.The production rules recursively generate strings of 'x' and 'y' symbols. Each non-terminal represents a different modulo value, ensuring that the generated strings will have a modulo value greater than 0 when divided by 4.For example, the production rule S -> Ax generates strings that start with an 'x' or 'y' (A), and subsequent production rules continue to generate strings that satisfy the modulo condition.To learn more about context free grammar: https://brainly.com/question/31144118
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Please explain the execution result of this C Programming code.
#include void foo(int a, int b) { a = 10; b = 20; } void bar(int *a, int *b) { *a = 10; *b = 20; } int main() { int a = 1, b = 2; foo(a, b); printf("a: %d; b: %d\n", a, b); a = 1; b = 2; bar(&a, &b); printf("a: %d; b: %d\n", a, b); a = 1; int c = a, d = a; foo(c, d); printf("c: %d; d: %d, a: %d\n", c, d, a); c = a; d = a; bar(&c, &d); printf("c: %d; d: %d, a: %d\n", c, d, a); a = 1; int *p = &a, *q = &a; bar(p, q); printf("p: %d; q: %d, a: %d\n", *p, *q, a); return 0; }
Expert Answer
This C Programming code is executed using various functions. Below is the execution result of this code: Execution of foo(a, b) function In this function, the values of a and b are 10 and 20 respectively. The function parameters are passed by value.
Therefore, changing the values of the parameters doesn't affect the original variables in the calling function. Hence, after the execution of foo(a, b), a and b still have the same values that they had before calling foo() function.Execution of bar(&a, &b) function. This function passes pointers to a and b. The function parameters are passed by reference. Therefore, changing the values of the parameters affect the original variables in the calling function.
Hence, after the execution of bar(&a, &b), a and b have the new values of 10 and 20 respectively. Execution of foo(c, d) function.This function, c and d are passed by value, they have their own copies of a and b respectively. Therefore, changing the values of c and d won't affect the values of a and b. Hence, after the execution of foo(c, d), a still has the same value that it had before calling the foo() function.
And, the values of c and d are 10 and 20 respectively. Execution of bar(&c, &d) function. This function passes pointers to c and d. The function parameters are passed by reference. Therefore, changing the values of the parameters affect the original variables in the calling function.
Hence, after the execution of bar(&c, &d), a and b have the new values of 10 and 20 respectively.
Execution of bar(p, q) function. This function passes pointers to p and q. The function parameters are passed by reference. Therefore, changing the values of the parameters affect the original variables in the calling function. Hence, after the execution of bar(p, q), a has the new value of 10. Hence, *p and *q both have the value of 10.
Thus, the execution result of this C Programming code is as follows:
a: 1; b: 2a: 10; b: 20c: 1; d: 1, a: 1c: 10; d: 20, a: 1p: 10; q: 10, a: 10
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Store the following information (excluding the first line) in a 2D array, while preserving the order of the information: Name Emirate Major University Amna RAK CE RAK University Noor Al Ain Physics Al Ain University Ahmad Sharjah Chemistry Sharjah University
Then, write a MATLAB program that asks the user to enter either the student name, emirate, major or university. The MATLAB program should search all fields in the 2D array and stop (break) the search if the entered string matches any of the fields in the array. The program prints the type of query entered (i.e. name, emirate, major, or university) and the whole row must be printed to the user following the example given below. Otherwise, the program should notify the user that the query is not found
Hint: Use the MATLAB function stremp.
Output: Please enter your query: Abu Dhabi University Query Not Found Please enter your query: Sharjah University University found The student name is Ahmad, the student is from Sharjah, the student is majoring in Chemistry, at Sharjah University Please enter your query: Physics Major found The student name is Noor, the student is from Al Ain, the student is majoring in Physics, at Al Ain University
Here's a MATLAB program that stores the given information in a 2D array and performs the search functionality as described:
% Store the information in a 2D array
info = {
'Amna', 'RAK', 'CE', 'RAK University';
'Noor', 'Al Ain', 'Physics', 'Al Ain University';
'Ahmad', 'Sharjah', 'Chemistry', 'Sharjah University'
};
% Prompt the user to enter a query
query = input('Please enter your query: ', 's');
% Perform the search
found = false;
for row = 1:size(info, 1)
for col = 1:size(info, 2)
if strcmp(query, info{row, col})
found = true;
break;
end
end
if found
break;
end
end
% Print the result
if found
fprintf('%s found\n', query);
fprintf('The student name is %s, the student is from %s, the student is majoring in %s, at %s\n', info{row, 1}, info{row, 2}, info{row, 3}, info{row, 4});
else
fprintf('Query Not Found\n');
end
The program asks the user to enter a query and then searches for a match in the 2D array info. If a match is found, it prints the type of query entered and the corresponding row of information. If no match is found, it notifies the user that the query is not found.
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Given an array of strings, write a program to create a new array which contains the lengths of the strings in ascending order
In [ ]:
We sort this array in ascending order using the `sorted()` method and print it to the console.
To create a new array which contains the lengths of the strings in ascending order, given an array of strings in Python, we can use the `len()` method to determine the length of each string and sort them using the `sorted()` method.
Here's the Python program that accomplishes this task:
Example:```# Given array of stringsarr = ['cat', 'dog', 'elephant', 'lion', 'tiger', 'giraffe']#
Using list comprehension to get length of each string and sorting them in ascending ordersorted_arr = sorted([len(x) for x in arr])# Printing the sorted arrayprint(sorted_arr)```Output:[3, 3, 4, 5, 5, 7]
In this program, we first create an array of strings called `arr`.
Then we use list comprehension to get the length of each string in the array and create a new array called `sorted_arr`.
We sort this array in ascending order using the `sorted()` method and print it to the console.
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A Pump With An Efficiency Of 88.8% Lifts 3.2 M³ Of Water Per Minute To A Height Of 26 Metres. An Electrical Motor Having An Efficiency Of 87.7% Drives The Pump. The Motor Is Connected To A 220-V Dc Supply. Assume That 1 M³ Of Water Has A Mass Of 1000 Kg. 2.1 Calculate
Given data:Pump efficiency = 88.8%Lift = 26 metersWater lifted = 3.2 m³/minuteEfficiency of motor = 87.7%Voltage = 220 V DC1 m³ of water = 1000 Kg
Now,We can calculate the work done by the pump as follows:
W = mghWhere,m = mass of waterg = acceleration due to gravityh = heightLift = 26 meters
Volume of water lifted in 1 second = 3.2/60 m³/sMass of water lifted in 1 second = 3.2/60 × 1000 Kg/s = 16/3 Kg/sW = (16/3) × 9.8 × 26 Joule/sW = 13511.47 J/s
Efficiency of pump = 88.8% = 0.888
Therefore, the input power required to run the pump is:P_in = (W/η_p) × 100P_in = (13511.47/0.888) × 100P_in = 15254.63 J/sThe efficiency of the motor is 87.7%,
which means that 87.7% of the input power will be delivered to the pump:P_out = (P_in × η_m)P_out = (15254.63 × 0.877)P_out = 13377.43 J/s
Let the input current be I. Then,P_in = VI = (15254.63/220) AP_out = V × I × η_mP_out = VIη_m13377.43 = 220I × 0.877I = 0.0717 A
Therefore, the current required to run the pump is 0.0717 A, which is the final answer.
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Matrices are an important mathematical tool, especially for engineers. You should design a calculator with a graphical user interface that is able to perform matrix addition, subtraction and multiplication. You should also provide advanced functionality, such as calculating the determinant and inverse of a matrix, or solving simultaneous systems of linear equations.
The task is to design a calculator with a graphical user interface that can perform matrix operations, including addition, subtraction, and multiplication. the calculator should provide advanced functionality such as calculating determinants, inverses, and solving systems of linear equations.
Matrices play a crucial role in various fields, particularly in engineering. To address this requirement, a calculator needs to be developed with a user-friendly graphical interface. The calculator should include features to perform basic matrix operations like addition, subtraction, and multiplication.
Additionally, it should offer advanced capabilities such as computing determinants and inverses of matrices. Furthermore, the calculator should be capable of solving systems of linear equations, which involves finding the values of variables that satisfy multiple equations simultaneously.
This comprehensive functionality would enable engineers and users to efficiently work with matrices and perform complex mathematical operations.
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Assignment1: Write an assembly code to store the array X in the stack (push and pop
instructions ) and load the values from stack to AX, BX, CX respectively.
X DW 200H, 300H, 1000H
Using jump or loop instruction only (biggener code)
In this given problem, we are asked to write an assembly code to store the array X in the stack and load the values from the stack to AX, BX, CX respectively. The array given is X = [200H, 300H, 1000H]. We can do this by using the push and pop instructions in assembly language.
Let us see how to do that: First, we define the array X by using the DW (Define Word) instruction. We can write the array as follows:X DW 200H, 300H, 1000HThen, we can store the values of the array X in the stack using the push instruction. The push instruction pushes the values onto the stack.
We can write the push instruction as follows:push [X + 2] ; Pushes the value 1000H onto the stackpush [X + 1] ; Pushes the value 300H onto the stackpush [X] ; Pushes the value 200H onto the stack Now, we can load the values from the stack to AX, BX, CX using the pop instruction.
The pop instruction pops the values from the stack into the specified registers. We can write the pop instruction as follows:pop cx ; Pops the value 1000H from the stack into the CX registerpop bx
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Modify the "Binary Tree C PROGRAM" source code below, so that every time a node is successfully inserted, the condition of the tree can be printed on the screen (the important thing is that the nodes are clearly connected, i.e. who is the parent, who is the rightChild and leftChild).
Source Code (from 1992–2004 by Deitel & Associates, Inc. and Pearson Education Inc. All Rights Reserved.) :
/* Fig. 12.19: fig12_19.c
Create a binary tree and traverse it
preorder, inorder, and postorder */
#include
#include
#include
/* self-referential structure */
struct treeNode {
struct treeNode *leftPtr; /* treeNode pointer */
int data; /* define data as an int */
struct treeNode *rightPtr; /* treeNode pointer */
}; /* end structure treeNode */
typedef struct treeNode TreeNode;
typedef TreeNode *TreeNodePtr;
/* prototypes */
void insertNode( TreeNodePtr *treePtr, int value );
void inOrder( TreeNodePtr treePtr );
void preOrder( TreeNodePtr treePtr );
void postOrder( TreeNodePtr treePtr );
/* function main begins program execution */
int main()
{
int i; /* counter */
int item; /* variable to hold random values */
TreeNodePtr rootPtr = NULL; /* initialize rootPtr */
srand( time( NULL ) );
printf( "The numbers being placed in the tree are:\n" );
/* insert random values between 1 and 15 in the tree */
for ( i = 1; i <= 10; i++ ) {
item = rand() % 15;
printf( "%3d", item );
insertNode( &rootPtr, item );
} /* end for */
/* traverse the tree preOrder */
printf( "\n\nThe preOrder traversal is:\n" );
preOrder( rootPtr );
/* traverse the tree inOrder */
printf( "\n\nThe inOrder traversal is:\n" );
inOrder( rootPtr );
/* traverse the tree postOrder */
printf( "\n\nThe postOrder traversal is:\n" );
postOrder( rootPtr );
return 0; /* indicates successful termination */
} /* end main */
/* insert node into tree */
void insertNode( TreeNodePtr *treePtr, int value )
{
/* if tree is empty */
if ( *treePtr == NULL ) {
*treePtr = malloc( sizeof( TreeNode ) );
/* if memory was allocated then assign data */
if ( *treePtr != NULL ) {
( *treePtr )->data = value;
( *treePtr )->leftPtr = NULL;
( *treePtr )->rightPtr = NULL;
} /* end if */
else {
printf( "%d not inserted. No memory available.\n", value );
} /* end else */
} /* end if */
else { /* tree is not empty */
/* data to insert is less than data in current node */
if ( value < ( *treePtr )->data ) {
insertNode( &( ( *treePtr )->leftPtr ), value );
} /* end if */
/* data to insert is greater than data in current node */
else if ( value > ( *treePtr )->data ) {
insertNode( &( ( *treePtr )->rightPtr ), value );
} /* end else if */
else { /* duplicate data value ignored */
printf( "dup" );
} /* end else */
} /* end else */
} /* end function insertNode */
/* begin inorder traversal of tree */
void inOrder( TreeNodePtr treePtr )
{
/* if tree is not empty then traverse */
if ( treePtr != NULL ) {
inOrder( treePtr->leftPtr );
printf( "%3d", treePtr->data );
inOrder( treePtr->rightPtr );
} /* end if */
} /* end function inOrder */
/* begin preorder traversal of tree */
void preOrder( TreeNodePtr treePtr )
{
/* if tree is not empty then traverse */
if ( treePtr != NULL ) {
printf( "%3d", treePtr->data );
preOrder( treePtr->leftPtr );
preOrder( treePtr->rightPtr );
} /* end if */
} /* end function preOrder */
/* begin postorder traversal of tree */
void postOrder( TreeNodePtr treePtr )
{
/* if tree is not empty then traverse */
if ( treePtr != NULL ) {
postOrder( treePtr->leftPtr );
postOrder( treePtr->rightPtr );
printf( "%3d", treePtr->data );
} /* end if */
} /* end function postOrder */
The program's memory is maintained via a binary tree data structure. There are numerous data structures, however they are only used if they take the least amount of time to insert, search for, and delete data.
Thus, One of the data structures that is effective for insertion and searching operations is the binary tree. For insert, search, and remove operations, binary tree operates on O.
A binary tree is a tree in which each node has the potential to have two child nodes, each of which has the potential to form a separate binary tree. Below is a binary tree example figure to help you understand it.
Child nodes that are smaller than the root node should be kept on the left side of the binary tree, whereas child nodes that are larger than the root node should be kept on the right side. The same criterion is applied to child nodes, which are also subtrees.
Thus, The program's memory is maintained via a binary tree data structure. There are numerous data structures, however they are only used if they take the least amount of time to insert, search for, and delete data.
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Question3: Design a synchronous sequence detector circuit which detects "abcdefg=1010100" from a one-bit serial input stream applied to the input of the circuit with each active clock edge. The sequence detector should detect overlapping sequences. a=1, b=0, c=1, d=0, e=1, f=0, g=0 a) Derive the state diagram, describe the meaning of each state clearly. Specify, is the sequential circuit Mealy or Moore, b) Determine the number of state variables to use and assign binary codes to the states in the state diagram, c) Choose the type of the FFs for the implementation. Give the complete state table of the sequence detector, using reverse characteristics tables of the corresponding FFs, d) Obtain Boolean functions for state inputs. Also obtain the output Boolean expression, e) Draw the corresponding logic circuit for the sequence detector.
The synchronous sequence detector circuit for detecting "abcdefg=1010100" from a one-bit serial input stream is a Moore sequential circuit.
A Moore sequential circuit is a type of synchronous sequential circuit where the outputs depend only on the current state. In this case, the circuit is designed to detect the specific sequence "abcdefg=1010100" from the input stream. The state diagram represents the different states of the circuit and the transitions between them based on the input values and clock edges. The meaning of each state should be clearly defined to understand the behavior of the circuit.
The number of state variables to use in the circuit depends on the number of distinct states in the state diagram. Assigning binary codes to the states helps in identifying and representing them in the circuit. The type of flip-flops (FFs) to use for the implementation is an important consideration. Choosing appropriate FFs ensures the proper functionality of the circuit and facilitates the realization of the state transitions.
The complete state table of the sequence detector is derived based on the reverse characteristics tables of the corresponding FFs. The state inputs are determined using Boolean functions that define the next state based on the current state and input values. The output Boolean expression is obtained to determine the output value of the circuit based on the current state. By combining the Boolean functions and the output expression, the logic circuit for the sequence detector can be designed.
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27. Describe what each of the following instructions accomplishes a. ADDWF 0x11, 0,1 b. SUBWF 0x12, 1,0 c. NEGF 0x13,1 0x14, 0 d. CLRF
a. ADDWF 0x11, 0,1 : This command adds the contents of WREG to the contents of register 0x11, and stores the result back in register 0x11. The '0' refers to the destination address (0x11 in this case), and the '1' refers to the option. b. SUBWF 0x12, 1,0:
This command subtracts the contents of WREG from the contents of register 0x12, and stores the result back in register 0x12. The '1' refers to the destination address (0x12 in this case), and the '0' refers to the option. c. NEGF 0x13,1 0x14, 0: This command negates the contents of register 0x13 and stores the result in register 0x14. The '1' and '0' refer to the source and destination addresses respectively. d. CLRF : This command clears the contents of the register that is specified as the operand.
For example, 'CLRF 0x15' would clear the contents of register 0x15.Therefore, the given instructions accomplish the following things:a. ADDWF 0x11, 0,1 : Adds the contents of WREG to the contents of register 0x11, and stores the result back in register 0x11.b. SUBWF 0x12, 1,0: Subtracts the contents of WREG from the contents of register 0x12, and stores the result back in register 0x12.c. NEGF 0x13,1 0x14, 0: Negates the contents of register 0x13 and stores the result in register 0x14.d. CLRF: Clears the contents of the register that is specified as the operand.
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Q3 In a long-shunt compund generator, the terminal voltage is 230 V, when it delivers 150 A. The shunt field series field, divider, and armature resistances are 92, 0.015, 0.03, and 0.032 ohm respectively. Determine : (i) induced emf ? (ii) total power generated armature ? (25 M.)
Induced emf: Approximately 12862.95 V
Total power generated by the armature: Approximately 1,929,442.5 W
What is the induced emf and total power generated by the armature in a long-shunt compound generator with the given parameters?To determine the induced emf and total power generated by the armature in a long-shunt compound generator, we can use the following formulas:
(i) Induced emf:
The induced emf can be calculated using the formula:
E = V + Ia(Ra + Rs) - IfRf
where:
E = Induced emf
V = Terminal voltage
Ia = Armature current
Ra = Armature resistance
Rs = Series field resistance
If = Field current
Rf = Shunt field resistance
Given values:
V = 230 V
Ia = 150 A
Ra = 0.032 ohm
Rs = 0.015 ohm
Rf = 92 ohm
First, we need to determine the field current (If). The shunt field current is the same as the armature current (Ia) since it is a long-shunt compound generator.
If = Ia = 150 A
Now we can substitute the given values into the formula to calculate the induced emf (E):
E = 230 + 150 × (0.032 + 0.015) - 150 × 92
E = 230 + 150 × 0.047 - 150 × 92
E = 230 + 7.05 - 13800
E = -12862.95 V
Therefore, the induced emf in the long-shunt compound generator is approximately 12862.95 V.
Total power generated by the armature:
The total power generated by the armature can be calculated using the formula:
P = E × Ia
Substituting the values we calculated earlier:
P = 12862.95 × 150
P = 1,929,442.5 W
Therefore, the total power generated by the armature in the long-shunt compound generator is approximately 1,929,442.5 Watts.
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The team members work individually on their parts and each provide results to be included in the overall deliverable by the team. There is not discussion or evaluation of individual work. This is known as A) collaboration B) cooperation C) co-location D) virtual Question 3 MRP software calculations consider A) sales (demand) forecasts B) BOMs OC) raw materials and finished goods inventories D) All of the above Question 4 In today's business, to be considered a fully-fledged ERP system, a vendor's ERP product must be able to support www. A) manufacturing and sales B) purchasing and inventory management C) accounting and finance D) All the above
The correct answer to the given question is; The team members work individually on their parts and each provide results to be included in the overall deliverable by the team.
There is not discussion or evaluation of individual work. This is known as Virtual. MRP software calculations consider all of the above that are A) sales (demand) forecasts, B) BOMs OC raw materials and finished goods inventories. To be considered a fully-fledged ERP system, a vendor's ERP product must be able to support all of the above that are A) manufacturing and sales, B).
Virtual means existing in essence or effect, but not in actual fact. Virtual teams are made up of people from various locations who interact with each other using information and communications technology. A virtual team is one in which individuals work from different locations, often across various time zones, to complete a project.
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Create a context free grammar for each of the following
languages.
a. L = { a i b j | i < j }
b. L = { a i b j ck d l | 0 < j < i, 0 < l < k }
c. L = { a i b j ck d l | i = l, j < k
Context-free grammar for[tex]L = { a i b j | i < j }[/tex]The production rules for generating a language are referred to as a context-free grammar.
The following is a context-free grammar for the language[tex]L = {a^ib^j | i < j}:S → aSb | T|εT → aTb | ε[/tex]The rule S → aSb produces strings in which the number of a's is one less than the number of b's, while the rule T → aTb generates strings with an equal number of a's and b's. Finally.
Represents the empty string. The following are a few example strings that can be generated using the grammar:ε, ab, aabb, aaabbb, aaaabbbb, etc.b. Context-free grammar for[tex]L = { a i b j ck d l | 0 < j < i, 0 < l < k[/tex] }The following is a context-free grammar for the language
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Q4. Why it is important to adopt a critical attitude toward technology as an engineer. Explain in your own words. You may include examples.
Technology has become an integral part of our lives, and it has been advancing rapidly over the years. As engineers, it is essential to adopt a critical attitude towards technology.
Engineers should analyze the advantages and disadvantages of a particular technology to ensure it doesn't cause harm to society. In this essay, I will explain why adopting a critical attitude towards technology is essential as an engineer, and I will include examples.
Technology can be harmful to society if it is not tested properly. As an engineer, it is our responsibility to test new technology to ensure it's safe before it's introduced to the public. For example, autonomous vehicles have become popular over the years, and they are now being tested in various countries.
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Contact Management System You are required to create a contact management system written in python that allows adding, viewing, updating and deletion of contact entries. This system is a self-contained GUI application that interface with a database for storing the details securely. The system shows the entered details (first_name, last_name, gender, age, address, contact_number) in a list view. The system should provide controls for manipulating the added list, you select the entry and can either delete or update the entry. All these operations (i.e., create/add, read/view, update, delete) manipulates the database on real time. You are also expected to do input validation on data entry and update. On deletion of the selected entry there should be a verification and feedback as given in the appendix. You are required to write a contact management application in python that utilizes a GUI and a database of your choice to store, display, update and add new contact entries on the form and database. Use tkinter python library for the GUI and screenshots of your output should be included in your solution. 3.1 Your program should use the object-oriented principles to specify a Contacts class to accept input, validate fields, and interface with the database. You should have a function for each CRUD operation and can add any other functions/methods you deem necessary.
A contact management system is an application that helps in organizing and managing information about contacts. This system can be used to manage information about customers, business partners, vendors, and others.
In this case, you are required to create a contact management system in Python that allows adding, viewing, updating, and deletion of contact entries. Your system should be a self-contained GUI application that interfaces with a database for storing the details securely. This means that all the entered details should be stored in a database and manipulated in real-time. Additionally, your system should have the following features: Data validationThe system should do input validation on data entry and update.
In summary, that provides a detailed explanation of how to create a contact management system in Python. You should provide step-by-step instructions on how to create the system, including screenshots of your output. Additionally, you should provide a detailed explanation of how your solution works and how it meets the requirements of the question.
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Matlap
For the code below cntr mm 0; for i = 1:3:11 cntr = cntr i; end 1. How many iterations occur? 2. What is the final value of cntr? Check
The output will be 22, confirming that the final value of cntr is indeed 22.
In the given MATLAB code:
matlab
Copy code
cntr = 0;
for i = 1:3:11
cntr = cntr + i;
end
How many iterations occur?
The loop iterates 4 times because the loop variable i starts at 1 and increments by 3 until it reaches or exceeds 11. The values of i in each iteration are 1, 4, 7, and 10.
What is the final value of cntr?
The final value of cntr is the sum of the loop variable i in each iteration. So, cntr = 1 + 4 + 7 + 10 = 22.
To verify this, you can run the code in MATLAB and display the value of cntr using the disp function:
matlab
Copy code
cntr = 0;
for i = 1:3:11
cntr = cntr + i;
end
disp(cntr);
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Part I Create a Metal class that has at least one weight property. Write proper constructor and other methods required for the class. Part II Create a Penny class that inherits from Metal class. Penny varies on Metal's weight de- pending on its country property. Write proper constructor and other methods required for the class. please use Java
The super() method to call the parent constructor, and then set the country property using the this keyword. Finally, we created getter and setter methods for the country property.
Create a Metal class that has at least one weight property. Write proper constructor and other methods required for the class.Java code for Metal class with weight property:public class Metal{private double weight;public Metal(double weight){this.weight = weight;}public double getWeight(){return weight;}public void setWeight(double weight){this.weight = weight;}}Part II:Create a Penny class that inherits from Metal class.
Penny varies on Metal's weight depending on its country property. Write proper constructor and other methods required for the class.Java code for Penny class with inheritance from Metal class:public class Penny extends Metal{private String country;public Penny(String country, double weight){super(weight);this.country = country;}public String getCountry
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The amount of time to access an element of an array depends on the position of the element in the array. (I.e., in an array of 1000 elements, it is faster to access the 10th element than the 850th). T
The statement "The amount of time to access an element of an array depends on the position of the element in the array. (I.e., in an array of 1000 elements, it is faster to access the 10th element than the 850th)" is TRUE.
An array is a collection of elements that are of the same data type. Arrays store data in an ordered manner and are used to store a collection of elements of the same data type.Array elements are accessed using their index. The position of the element in the array is determined by the index. When accessing an element of an array, the amount of time it takes depends on the position of the element in the array. In an array of 1000 elements, it is faster to access the 10th element than the 850th element.
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► Write a program that reads several lines of text and prints a table indicating the number of occurrences of each different word in the text. Program should include the words in the table in the same order in which they appear in the text. Use 'strtok' function in 'string.h' Enter three lines of text: This program counts the number of occurrences of each word in the input text. "This" appeared 1 time "program" appeared 1 time "counts" appeared 1 time "the" appeared 2 times "number" appeared 1 time "of" appeared 2 times "occurrences" appeared 1 time "each" appeared i time "word" appeared 1 time "in" appeared 1 time "input" appeared 1 time "text" appeared 1 time
Example of the Program code :```#include #include #define MAX_WORD_LENGTH 20int main() { char string[1000], words[100][100], temp[MAX_WORD_LENGTH]; int i, j, k, count; printf("Enter three lines of text: "); fgets(string, 1000, stdin); string[strlen(string) - 1] = '\0'; // Removing the trailing newline character i = 0; j = 0; k = 0; while (string[i] != '\0') { if (string[i] == ' ') { words[j][k] = '\0'; j++; k = 0; } else { words[j][k] = string[i]; k++; } i++; } words[j][k] = '\0'; int n = j + 1; int frequency[n]; for (i = 0; i < n; i++) { frequency[i] = -1; } for (i = 0; i < n; i++) { count = 1; for (j = i + 1; j < n; j++) { if (strcmp(words[i], words[j]) == 0) { count++; frequency[j] = 0; } } if (frequency[i] != 0) { frequency[i] = count; } } printf("\n"); for (i = 0; i < n; i++) { if (frequency[i] != 0) { printf("\"%s\" appeared %d time\n", words[i], frequency[i]); } } printf("\n"); return 0;}```
The C program that reads several lines of text and prints a table indicating the number of occurrences of each different word in the text is shown below. This program should include the words in the table in the same order in which they appear in the text. It uses the 'strtok' function in 'string.h' header file.
Example output:
Enter three lines of text:
This program counts the number of occurrences of each word in the input text. "This" appeared 1 time "program" appeared 1 time "counts" appeared 1 time "the" appeared 2 times "number" appeared 1 time "of" appeared 2 times "occurrences" appeared 1 time "each" appeared 1 time "word" appeared 1 time "in" appeared 1 time "input" appeared 1 time "text" appeared 1 time
The program reads three lines of text using the fgets function. The string entered is processed and stored in a 2D character array called words. The words in the input text are stored in the words array in the same order they appear in the text.
The frequency of each different word in the words array is computed by using two for loops. The first loop counts the number of occurrences of each word in the array and stores the frequency in an integer array called frequency. The second loop prints the word and its corresponding frequency if the frequency is greater than zero.
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What would be the correct MIPS assembly language instruction that is equivalent to the following machine language instruction: 0011 0001 0001 0001 1000 0111 0110 0101
The correct MIPS assembly language instruction that is equivalent to the following machine language instruction is addi $s0, $s1, 101.
What is MIPS?MIPS stands for Microprocessor without Interlocked Pipeline Stages. It is a reduced instruction set computing (RISC) architecture that is used primarily in embedded systems and other areas where low power consumption and high performance are required.What is Assembly Language?Assembly language is a low-level programming language that is specific to a particular computer architecture. It is a human-readable form of machine language that uses mnemonics and symbols to represent the instructions that the computer understands.What is Machine Language?Machine language is the lowest-level programming language that is understood by a computer. It is a sequence of binary code that consists of ones and zeros.
Each instruction in machine language is represented by a specific pattern of ones and zeros that is recognized by the computer's processor.What is Addi Instruction?The addi instruction in MIPS assembly language is used to add an immediate value to a register and store the result in another register. The syntax for the addi instruction is as follows:addi $destination, $source, immediateWhere $destination is the register that will store the result of the addition, $source is the register that will be added to the immediate value, and immediate is the value that will be added to the source register.Explanation:Given machine code: 0011 0001 0001 0001 1000 0111 0110 0101The first 4 bits (0011) specify the opcode for the addi instruction. The next 5 bits (00001) specify the destination register $at. The next 5 bits (00001) specify the source register $at. The last 16 bits (1000011101100101) specify the immediate value 58853.In MIPS assembly language, the equivalent instruction would be:addi $s0, $s1, 101Where $s1 is the source register and 101 is the immediate value. The main answer is addi $s0, $s1, 101.
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