Hard disk works on the following technologies: (i) Technology used within the hard drive to read & write data to the drive and (ii) Technology used by the hard drive to interface with the system. Explain with a diagram the principle and working of a hard drive.
Answer:
The green-blue circuit board you can see in the first photo includes the disk controller, a circuit that allows the computer to operate the drive's mechanisms and read/write data to and from it. ... A small hard drive typically has only one platter, but each side of it has a magnetic coating
Explanation:
CHALLENGE ACTIVITY
1.6.1: Type casting: Computing average owls per zoo.
Assign avg_owls with the average owls per zoo. Print avg_owls as an integer.
Sample output for inputs: 1 2 4
Average owls per zoo: 2
-------------------------------------------------------------------
Someone please explain what I am doing wrong?
Answer:
avg_owls=0.0
num_owls_zooA = int(input())
num_owls_zooB = int(input())
num_owls_zooC = int(input())
num_zoos = 3
avg_owls = (num_owls_zooA + num_owls_zooB + num_owls_zooC) / num_zoos
print('Average owls per zoo:', int(avg_owls))
Explanation:
There is a problem while you are trying the calculate the average owls per zoo.
As you may know, in order to calculate the average, you need to get the total number of owls in all the zoos, then divide it to the number of zoos. That is why you need to sum num_owls_zooA + num_owls_zooB + num_owls_zooC and divide the result by num_zoos
Be aware that the average is printed as integer value. That is why you need to cast the avg_owls to an int as int(avg_owls)
A large hotel needs a program to store information about rooms at the hotel. Each of the rooms will be represented by an object which will store the number of beds in the room, and whether the room has a bath. Some rooms at the hotel are suites, in which case in addition to the information above they also need to store the number of sub-rooms in the suite. Which of the following is the best object-oriented program design?
a. Create a Suite class with the instance variables int numBeds, boolean hasBath, and int numSubrooms .Create a subclass Room of Suite which wil inherit the instance variables numBeds and hasBath from Room, but not the instance variable int numSubrooms
b. Create a Room class with the instance variables int numBeds, and boolean hasBath. Create a subclass Suite of Room which will inherit the Instance variables of Room and has an additional instance variable int numSubrooms.
c. Create each of the following as separate classes, Room. Beds, Bath, Suite, SubRoom Create a single Roomor Suite class with the instance variables int numBeds, boolean hasBath, and int numSubrooms.
d. Create a Room class with the instance variables int numBeds, and boolean hasBath. Create a separate class Suite with the instance variable int numSubrooms
b. Create a Room class with the instance variables int numBeds, and boolean hasBath. Create a subclass Suite of Room which will inherit the Instance variables of Room and has an additional instance variable int numSubrooms.
Explanation:
In object-oriented program designs, applications are split into sub-tasks and each sub-task is designed by creating as one or more classes to model it. This allows for flexibility and extensibility among other things.
In the case of the large hotel, two classes are of utmost importance:
i. the Room class to hold information about the number of beds in the room and whether or not the room has a bath.
ii. the Suite class to hold, in addition to the information held by the Room class, information about the number of sub-rooms in the suite.
To apply the concept of object-oriented design, since the suite is a special type of room, the Room class will serve as the super class while the Suite class which contains extra information will serve as the subclass inheriting all the properties of the Room class. Therefore the Suite will have all the properties of the Room and also its own special property - number of sub-rooms in this case.
What does getfenv() do?
Answer: getfenv() is a type of function. Particually a envirotment function. for a lua coding.
Explanation: What this does it goes thourgh line of code in a particular order.
This means. getfenv is used to get the current environment of a function. It returns a table of all the things that function has access to. You can also set the environment of a function to another environment.
Forgot to include examples of where this could be used. Although not very common uses, there are some. In the past Script Builders used getfenv to get the environment of a script, and setfenv to set the environment of a created script’s environment to a fake environment, so they couldn’t affect the real one. They could also inject custom global functions.
Not entirely sure if this uses getfenv or setfenv, but the use in Crazyman32’s AeroGameFramework is making the environment of each module have access to other modules without having to require them, and having access to remotes without having to directly reference them.
Answer: ummm, who knows
Explanation:
Define a class StatePair with two template types (T1 and T2), a constructor, mutators, accessors, and a PrintInfo() method. Three vectors have been pre-filled with StatePair data in main():vector> zipCodeState: ZIP code - state abbreviation pairsvector> abbrevState: state abbreviation - state name pairsvector> statePopulation: state name - population pairsComplete main() to use an input ZIP code to retrieve the correct state abbreviation from the vector zipCodeState. Then use the state abbreviation to retrieve the state name from the vector abbrevState. Lastly, use the state name to retrieve the correct state name/population pair from the vector statePopulation and output the pair.Ex: If the input is:21044the output is:Maryland: 6079602
Answer:
Here.Hope this helps and do read carefully ,you need to make 1 .cpp file and 1 .h file
Explanation:
#include<iostream>
#include <fstream>
#include <vector>
#include <string>
#include "StatePair.h"
using namespace std;
int main() {
ifstream inFS; // File input stream
int zip;
int population;
string abbrev;
string state;
unsigned int i;
// ZIP code - state abbrev. pairs
vector<StatePair <int, string>> zipCodeState;
// state abbrev. - state name pairs
vector<StatePair<string, string>> abbrevState;
// state name - population pairs
vector<StatePair<string, int>> statePopulation;
// Fill the three ArrayLists
// Try to open zip_code_state.txt file
inFS.open("zip_code_state.txt");
if (!inFS.is_open()) {
cout << "Could not open file zip_code_state.txt." << endl;
return 1; // 1 indicates error
}
while (!inFS.eof()) {
StatePair <int, string> temp;
inFS >> zip;
if (!inFS.fail()) {
temp.SetKey(zip);
}
inFS >> abbrev;
if (!inFS.fail()) {
temp.SetValue(abbrev);
}
zipCodeState.push_back(temp);
}
inFS.close();
// Try to open abbreviation_state.txt file
inFS.open("abbreviation_state.txt");
if (!inFS.is_open()) {
cout << "Could not open file abbreviation_state.txt." << endl;
return 1; // 1 indicates error
}
while (!inFS.eof()) {
StatePair <string, string> temp;
inFS >> abbrev;
if (!inFS.fail()) {
temp.SetKey(abbrev);
}
getline(inFS, state); //flushes endline
getline(inFS, state);
state = state.substr(0, state.size()-1);
if (!inFS.fail()) {
temp.SetValue(state);
}
abbrevState.push_back(temp);
}
inFS.close();
// Try to open state_population.txt file
inFS.open("state_population.txt");
if (!inFS.is_open()) {
cout << "Could not open file state_population.txt." << endl;
return 1; // 1 indicates error
}
while (!inFS.eof()) {
StatePair <string, int> temp;
getline(inFS, state);
state = state.substr(0, state.size()-1);
if (!inFS.fail()) {
temp.SetKey(state);
}
inFS >> population;
if (!inFS.fail()) {
temp.SetValue(population);
}
getline(inFS, state); //flushes endline
statePopulation.push_back(temp);
}
inFS.close();
cin >> zip;
for (i = 0; i < zipCodeState.size(); ++i) {
// TODO: Using ZIP code, find state abbreviation
}
for (i = 0; i < abbrevState.size(); ++i) {
// TODO: Using state abbreviation, find state name
}
for (i = 0; i < statePopulation.size(); ++i) {
// TODO: Using state name, find population. Print pair info.
}
}
Statepair.h
#ifndef STATEPAIR
#define STATEPAIR
#include <iostream>
using namespace std;
template<typename T1, typename T2>
class StatePair {
private:
T1 key;
T2 value;
public:
// Define a constructor, mutators, and accessors
// for StatePair
StatePair() //default constructor
{}
// set the key
void SetKey(T1 key)
{
this->key = key;
}
// set the value
void SetValue(T2 value)
{
this->value = value;
}
// return key
T1 GetKey() { return key;}
// return value
T2 GetValue() { return value;}
// Define PrintInfo() method
// display key and value in the format key : value
void PrintInfo()
{
cout<<key<<" : "<<value<<endl;
}
};
#endif
In this exercise we have to use the knowledge in computational language in C++ to write the following code:
We have the code can be found in the attached image.
So in an easier way we have that the code is
#include<iostream>
#include <fstream>
#include <vector>
#include <string>
#include "StatePair.h"
using namespace std;
int main() {
ifstream inFS;
int zip;
int population;
string abbrev;
string state;
unsigned int i;
vector<StatePair <int, string>> zipCodeState;
vector<StatePair<string, string>> abbrevState;
vector<StatePair<string, int>> statePopulation;
inFS.open("zip_code_state.txt");
if (!inFS.is_open()) {
cout << "Could not open file zip_code_state.txt." << endl;
return 1;
}
while (!inFS.eof()) {
StatePair <int, string> temp;
inFS >> zip;
if (!inFS.fail()) {
temp.SetKey(zip);
}
inFS >> abbrev;
if (!inFS.fail()) {
temp.SetValue(abbrev);
}
zipCodeState.push_back(temp);
}
inFS.close();
inFS.open("abbreviation_state.txt");
if (!inFS.is_open()) {
cout << "Could not open file abbreviation_state.txt." << endl;
return 1;
}
while (!inFS.eof()) {
StatePair <string, string> temp;
inFS >> abbrev;
if (!inFS.fail()) {
temp.SetKey(abbrev);
}
getline(inFS, state);
getline(inFS, state);
state = state.substr(0, state.size()-1);
if (!inFS.fail()) {
temp.SetValue(state);
}
abbrevState.push_back(temp);
}
inFS.close();
inFS.open("state_population.txt");
if (!inFS.is_open()) {
cout << "Could not open file state_population.txt." << endl;
return 1;
}
while (!inFS.eof()) {
StatePair <string, int> temp;
getline(inFS, state);
state = state.substr(0, state.size()-1);
if (!inFS.fail()) {
temp.SetKey(state);
}
inFS >> population;
if (!inFS.fail()) {
temp.SetValue(population);
}
getline(inFS, state);
statePopulation.push_back(temp);
}
inFS.close();
cin >> zip;
for (i = 0; i < zipCodeState.size(); ++i) {
}
for (i = 0; i < abbrevState.size(); ++i) {
}
for (i = 0; i < statePopulation.size(); ++i) {
}
}
Statepair.h
#ifndef STATEPAIR
#define STATEPAIR
#include <iostream>
using namespace std;
template<typename T1, typename T2>
class StatePair {
private:
T1 key;
T2 value;
public:
StatePair()
{}
void SetKey(T1 key)
{
this->key = key;
}
void SetValue(T2 value)
{
this->value = value;
}
T1 GetKey() { return key;}
T2 GetValue() { return value;}
void PrintInfo()
{
cout<<key<<" : "<<value<<endl;
}
};
See more about C code at brainly.com/question/19705654
Create a C program with the following process synchronization behavior. This synchronization process continues forever. You need to provide your own signal handling functions in the Parent, Child 1, Child 2, and Child3, each printing out a message with the cumulative number of signals received.
Answer:
hope this helps,do consider giving brainliest
Explanation:
int main() {
int i,pid; printf("pid : %d \n",pid);
pid=fork();
printf("pid : %d \n",pid);
printf("\n");
if(pid==0) {
printf("Child starts\n");
for(i=0;i<5;i++) {
printf("i : %d\n",i);
printf("\n");
}
printf("Child ends\n");
}
else {
printf("\nBefore wait\n");
printf("getpid : %d\n",getpid());
pid=wait(0);
printf("\npid : %d\n",pid);
printf("After wait\n");
printf("Parent\n");
printf("getpid : %d\n",getpid());
}
}
describe how sodium ammonium chloride can be separated from a solid mixture of ammonium chloride and anhydrous calcium chloride
Answer:
There are way in separating mixtures of chlorides salts such as that of sodium chloride and ammonium chloride. It can be done by crystallization, filtration or sublimation. If we want to separate the mixture, we have to heat up to 330-350 degrees Celsius and collect the gas that will be produced.
Write a script called fact.sh that is located in your workspace directory to calculate the factorial of a number n; where n is a non-negative integer between 1 and 20 that is passed as a parameter from the command line (e.g. ./fact.sh 5). The result should be echoed to the screen as a single integer (e.g. 120).
NOTE: Do not include any other output, just output the single integer result.
Submit your code to the auto-grader by pressing Check-It!
NOTE: You can submit as many times as you want up until the due date.
Answer:
hope this helps
Explanation:
14. Video game legend Shigeru Miyamoto designed all EXCEPT which of the following games?
a) Donkey Kong
b) Mario Bros
c) The Legend of Zelda
d) Pac-Man
Which header will be the largest?
Hello
Hello
Hello
Hello
Answer:
Bye
bye
bye
bye
Explanation:
Answer:
HELLO Hello thank you for your points...
Need help with 9.2 Lesson Practice edhesive asap please
Answer:
Can you add an attachment please
In this exercise we have to use the computer language knowledge in python, so the code is described as:
This code can be found in the attached image.
So the code can be described more simply below, as:
height = []
height.append([16,17,14])
height.append([17,18,17])
height.append([15,17,14])
print(height)
See more about python at brainly.com/question/26104476
8. Which of the following prompted the creation of video game ratings?
a) Mortal Kombat
b) Super Mario Kart
c) Grain turismo
d) Street Fighter III
Answer: super Mario kart (who don't love mortal Kombat tho)
Explanation:
Annapurno
Page
Date
corite
a programe to input length and the
breath of the rectangle and cliculate the
anecan perimeter .write a program to input length and breadth of the rectangle and calculate the area and perimeter
Answer:
The program in Python is as follows:
Length = float(input("Length: "))
Width = float(input("Width: "))
Area = Length * Width
print("Area: ",Area)
Explanation:
This gets input for length
Length = float(input("Length: "))
This gets input for width
Width = float(input("Width: "))
This calculates the area
Area = Length * Width
This prints the calculated area
print("Area: ",Area)
what is the output of this line of code?
print("hello"+"goodbye")
-"hello"+"goodbye"
-hello + goodbye
-hello goodbye
-hellogoodbye
Answer:
“hello” + “goodbye”
Explanation:
WILLING TO GIVE 50 POINTS PLS HELP Every appliance has an appliance tag that shows the amount of power the appliance uses. Appliance tags are usually on the bottom of the appliance. Along with other details, the tag gives information about the electric power the appliance consumes per unit of time.
Dorian took a picture of the appliance tag on the bottom of his family's blender, which is a kitchen appliance used to mix and puree foods.
Read the tag, and select the correct value from each drop-down menu.
The tag lists the ______(V) that the appliance runs at and its
_______ in watts (W). According to the tag, Dorian's blender uses
watts ________of power.
Part B
Think about the appliances and electronics you interact with every day. List one appliance that you think uses less power than the blender and one appliance that you think uses more power than the blender. Be sure to explain your reasoning.
Answer:
Part a: The tag lists the
(voltage)
(V) that the appliance runs at and its
(power)
in watts (W). According to the tag, Dorian's blender uses (120)
watts of power.
so your answers are voltage, then power, then 120.
c.
b.
b.
Part B:
One appliance that uses less power Then I blender would probably be a microwave. This is because you need to have electricity moving rapidly to move the blades in a blender compared to the microwave which you just need to keep a steady pace. One appliance that I think would use more power than a blender would definitely be an oven. This is because It does use steady current power just like the microwave but it uses it for way longer which takes up more power than rapid power in a blender for a short time.
Explanation:
For example, 150 watts (blender) and 300 watts (oven) have a 150-watt difference, sort of like subtraction in some cases!
Hope This Helps!!
:)
Write a script called pow.sh that is located in your workspace directory to calculate the power of two integer numbers (e.g. a ^ b); where a and b are passed as parameters from the command line (e.g. ./pow.sh 2 3). The result should be echoed to the screen as a single integer (e.g. 8).
Answer:
#! /usr/bin/bash
echo $[$1**$2]
Explanation:
(a) The first line of the code is very important as it tells the interpreter where the bash shell is located on the executing computer.
To get this on your computer, simply:
1. open your command line
2. type the following command: which bash
This will return the location where the bash shell is. In this case, it returned
/usr/bin/bash
(b) The second line is where the actual arithmetic takes place.
The variables $1 and $2 in the square bracket are the first and second arguments passed from the command line. The ** operator raises the left operand (in this case $1) to the power of the second operand (in this case $2).
Then, the echo statement prints out the result.
(c) Save this code in a file named as pow.sh then run it on the command line.
For example, if the following is run on the command line: ./pow.sh 2 3
Then,
the first argument which is 2 is stored in $1 and;
the second argument which is 3 is stored in $2.
The arithmetic operator (**) then performs the arithmetic 2^3 which gives 8.
15. Feelings (maps, coins, clues, etc.) and the invisClue books were some innovative ways used to keep __________ players engaged with the game when not playing.
a) Smirk
b) zork
c) The Legend of Zelda
d) Pong
Answer:
pong i could be wrong i think its right tho
Explanation:
The Basic premise of____is that objects can be tagged, tracked, and monitored through a local network, or across the Internet.
The basic premise of
a. artificial intelligence
b. intelligent workspaces
c. the Internet of Things
d. the digital divide
Answer:
C.
Explanation:
Internet of things
The Basic premise of the Internet of Things is that objects can be tagged, tracked, and monitored through a local network, or across the Internet option (c) is correct.
What is IoT?The term "Internet of things" refers to actual physical items that have sensors, computing power, software, and other innovations and can link to those other systems and gadgets via the Internet or other communication networks and share files with them.
As we know,
Using a local network or the Internet, things may be identified, tracked, and monitored is the fundamental tenet of the Internet of Things.
Thus, the Basic premise of the Internet of Things is that objects can be tagged, tracked, and monitored through a local network, or across the Internet option (c) is correct.
Learn more about the IoT here:
https://brainly.com/question/25703804
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1. If you were on Earth and wanted to call someone via the radio on the moon, and they immediately sent a message back as soon as they received your message, how long from when you sent your message would you get a response
Answer:
About 2.5 seconds.
Explanation:
The speed of radio waves is 299,750 km/s whereas the distance between moon and earth is 384,400 km. By dividing speed of radio waves over the distance of moon and earth, we get 1.22 seconds of time from one side or in other words the person on the moon receives message in 1.22 seconds from the earth and the person on the earth receives a response from the moon in also 1.2 seconds so total time taken by the sender in receiving response from the moon is 2.5 to 3 seconds.
What is the result of executing the following code? You can assume the code compiles and runs. #include using namespace std; void factorial(int n) { cout << n << '*'; factorial(n-1); } int main() { factorial(4); return 0; }
Answer:
The result of executing the code is 24.
Explanation:
Factorial of a number:
The factorial of a number is the multiplication of a number by all it's previous numbers until one. For example:
0! = 1
1! = 1
2! = 2*1 = 2
3! = 3*2*1 = 6
4! = 4*3*2*1 = 24
In this question:
This is a C++ code, which is a recursive function to calculate a factorial of a number.
The input, given by factorial(4), is 4, so the result of executing the code is 24.
cout << n << '*'; factorial(n-1);
This means for each input, until n = 1, the output is the factorial of the number. This is the recursive function.
11. First featured in Donkey Kong, the jump button let to the creation of a new game category known as __________
a) the jumper
b) the performer
c) the platformer
d) the actioner
Answer:
C
Explanation:
what is the rate of defualt frame?
Answer:
the default frame rate is based on the frame rate of the display ( here also called *refresh rate" which is set to 60 frames per second on the most computers. A frame rate of 24 frames per second (usual for movies) or above will be enough for smooth animations
Outlines help you visualize the slides and the points you will include on each slide.
False
True
Answer:
True
Explanation:
because it was correct
Which tab can be used to change the theme and background style of a presentation?
O Design
O Home
O Insert
O View
Answer:
Design
Explanation:
seems the most correct one..
1. Assuming you are downloading a 100MB (800Mb) file on a Network that can download data at 54Mbps.
A. What is the download rate in megabyte per second?
B. Using the download rate in MBps. Find the total download time for the file.
C. Calculate the total download time for the file using 54Mbps.
Answer:A.)Say you have a 1 Mbps Internet connection. With such a connection speed, you might expect to download files at a rate of around 1 MB per second, but when you actually download a file, the download speed only reaches up to 100 – 120 KB per second.
B.)File Size In Megabytes / (Download Speed In Megabits / 8) = Time In Seconds. A 15 Megabyte file, downloading at 10 Megabits per second: 15 / (10/8) = 12 seconds.
C.) If the file size is 100mb and downloading speed is 54Mbps So the total time taken is 00:00:15.
Explanation:
Identify the following terms being described. Write your answers on the space provided.
1. Worldwide Web
______________________
2.E-mail
________________________
3.Powerline networking
_______________________
5.Cable
_______________________
Answer:
Find answers below.
Explanation:
1. Worldwide Web: In computing, WWW simply means World Wide Web. The world wide web was invented by Sir Tim Berners-Lee in 1990 while working with the European Council for Nuclear Research (CERN); Web 2.0 evolved in 1999. Basically, WWW refers to a collection of web pages that are located on a huge network of interconnected computers (the Internet). Also, users from all over the world can access the world wide web by using an internet connection and a web browser such as Chrome, Firefox, Safari, Opera, etc.
In a nutshell, the World Wide Web is an information system that is generally made up of users and resources (documents) that are connected via hypertext links.
2.E-mail: An e-mail is an acronym for electronic mail and it is a software application or program designed to let users send and receive texts and multimedia messages over the internet.
It is considered to be one of the most widely used communication channel or medium is an e-mail (electronic mail).
3. Powerline networking: this is a wired networking technology that typically involves the use of existing electrical cables in a building to connect and transmit data on network devices through powerline network adapters.
4. Cable: this include network cables such as CAT-5, CAT-6 and fiber optic cables used for connecting and transmitting signals between two or more network devices.
Use Simulink to simulate the following circuit. Save your slx.file as EE207_StudentID.
Find the power absorbed by the 5 A current source in the circuit in Figure
Answer:
the correct answer is in the below file
xh5jg5l.com
Explain the five generations of computer
Answer:
1 First Generation
The period of first generation: 1946-1959. Vacuum tube based.
2 Second Generation
The period of second generation: 1959-1965. Transistor based.
3 Third Generation
The period of third generation: 1965-1971. Integrated Circuit based.
4 Fourth Generation
The period of fourth generation: 1971-1980. VLSI microprocessor based.
5 Fifth Generation
The period of fifth generation: 1980-onwards. ULSI microprocessor based.
The phrase "generation" refers to a shift in the technology that a computer is/was using. The term "generation" was initially used to describe different hardware advancements. These days, a computer system's generation involves both hardware and software.
Who invented the 5th generation of computers?The Japan Ministry of International Trade and Industry (MITI) launched the Fifth Generation Computer Systems (FGCS) initiative in 1982 with the goal of developing computers that use massively parallel computing and logic programming.
The generation of computers is determined by when significant technological advancements, such as the use of vacuum tubes, transistors, and microprocessors, take place inside the computer. There will be five computer generations between now and 2020, with the first one starting around 1940.
Earlier models of computers (1940-1956)Computers of the Second Generation (1956-1963)Computers of the Third Generation (1964-1971)Computers of the fourth generation (1971-Present)Computers of the fifth generationLearn more about generations of computers here:
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Which are examples of ribbon customizations?
linking Ribbon categories, rearranging Ribbon commands, replacing Ribbon drop-down menus
replacing Ribbon drop-down menus, adding new Ribbon tabs, deleting Ribbon tools
renaming Ribbon tabs and categories, adding new Ribbon tabs, rearranging Ribbon commands
rearranging Ribbon commands, replacing Ribbon drop-down menus, deleting Ribbon tools
Answer:the third one
Explanation:
Mohammed needs to ensure that users can execute a query against a table but provide different values to the query each time it is run. Which option will achieve this goal?
parameter queries
dynamic queries
query joins
static queries
Answer:
the answer is B
Explanation: