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3 years ago

What is the function of the modem?

2 answers:

8 0

A modem is the internal or external device its function is to transfer data over communication lines
modems use two different types of data transmission
synchronous and asynchronous
The functions of modem have changed over years it was first used for telegrams and to transmit data in 1950s.
Modems were used with computers in 1977 for first time to transmit data between computers firstly it was used for small amount of computers
As modem improves day by day and were able to transmit information fastly between two or more hosts and the internet network slowly spreads
There are four types of modems ,
1 Fax Modems which solely transfer data between fax machines
2 The traditional ISDN modem
3 the Digital Subscribers Line
4 the Cable Modem

const2013 [10]3 years ago

8 0

A modem is an external and/or internal device thats function is to transmit digital data over communication lines. Traditional modems used frequently with dial-up networks to change analog data from telephone lines into computer digital data. Broadband modems transfer digital data between digital devices, specifically two.

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Write a program that first gets a list of integers from input. Then, get another value from the input, and output all integers l

jonny [76]

Answer:

The c++ program for the given scenario is given below.

#include <iostream>

using namespace std;

int main() {

int len=20, arr[len], data;

// initialize all elements of the array to 0

for(int i=0; i<len; i++)

{

arr[i] = 0;

}

cout<<"This program outputs all the numbers less than or equal to the given number."<<endl;

cout<<"Enter the list of numbers. Enter 0 to stop entering the numbers. "<<endl;

for(int i=0; i<len; i++)

{

cin>>arr[i];

// 0 indicates user wishes to stop entering values

if(arr[i] == 0)

break;

else

continue;

}

// number from which the list is to be compared

cout<<"Enter the number to be compared."<<endl;

cin>>data;

cout<<"The values less than or equal to the number "<<data<<" are "<<endl;

for(int i=0; i<len; i++)

{

// 0 indicates the end of the list entered by the user

if(arr[i]==0)

break;

if(arr[i] <= data)

cout<<arr[i]<<endl;

}

return 0;

}

OUTPUT

This program outputs all the numbers less than or equal to the given number.

Enter the list of numbers. Enter 0 to stop entering the numbers.

Enter the number to be compared.

The values less than or equal to the number 59 are

Explanation:

This program takes input only from the user and makes no assumptions.

The list of numbers entered by the user are stored in an array. If the user input is less than the size of the array, the remaining elements are set to 0.

While taking input from the user, if any element of the array is found to be 0, the loop is discontinued.

for(int i=0; i<len; i++)

{

cin>>arr[i];

if(arr[i] == 0)

break;

else

continue;

}

Same test is applied when all the numbers less than the given number are displayed.

for(int i=0; i<len; i++)

{

if(arr[i]==0)

break;

if(arr[i] <= data)

cout<<arr[i]<<endl;

}

The above program takes into account all the specifications in the given question.

5 0

3 years ago

Create a program that displays a menu to select addition, subtraction, or multiplication. Using random numbers between 0 and 12

Lemur [1.5K]

Answer:

This question is answered using C++

#include<iostream>

#include <cstdlib>

#include <ctime>

using namespace std;

int main(){

int ope, yourresult;

cout<<"Select Operator: \n"<<"1 for addition\n"<<"2 for subtraction\n"<<"3 for multiplication\n";

cout<<"Operator: ";

cin>>ope;

srand((unsigned) time(0));

int num1 = rand() % 12;

int num2 = rand() % 12;

int result = 1;

if(ope == 1){

cout<<num1<<" + "<<num2<<" = ";

result = num1 + num2;

}

else if(ope == 2){

cout<<num1<<" - "<<num2<<" = ";

result = num1 - num2;

}

else if(ope == 3){

cout<<num1<<" * "<<num2<<" = ";

result = num1 * num2;

}

else{

cout<<"Invalid Operator";

}

cin>>yourresult;

if(yourresult == result){

cout<<"Correct!";

}

else{

cout<<"Incorrect!";

}

return 0;

}

Explanation:

This line declares operator (ope) and user result (yourresult) as integer

int ope, yourresult;

This prints the menu

cout<<"Select Operator: \n"<<"1 for addition\n"<<"2 for subtraction\n"<<"3 for multiplication\n";

This prompts the user for operator

cout<<"Operator: ";

This gets user input for operator

cin>>ope;

This lets the program generates different random numbers

srand((unsigned) time(0));

This generates the first random number

int num1 = rand() % 12;

This generates the second random number

int num2 = rand() % 12;

This initializes result to 1

int result = 1;

If the operator selected is 1 (i.e. addition), this prints an addition operation and calculates the actual result

if(ope == 1){

cout<<num1<<" + "<<num2<<" = ";

result = num1 + num2;

}

If the operator selected is 2 (i.e. subtraction), this prints an subtracttion operation and calculates the actual result

else if(ope == 2){

cout<<num1<<" - "<<num2<<" = ";

result = num1 - num2;

}

If the operator selected is 3 (i.e. multiplication), this prints an multiplication operation and calculates the actual result

else if(ope == 3){

cout<<num1<<" * "<<num2<<" = ";

result = num1 * num2;

}

If selected operator is not 1, 2 or 3, the program prints an invalid operator selector

else{

cout<<"Invalid Operator";

}

This gets user input

cin>>yourresult;

This checks if user result is correct and prints "Correct!"

if(yourresult == result){

cout<<"Correct!";

}

If otherwise, the program prints "Incorrect!"

else{

cout<<"Incorrect!";

}

return 0;

6 0

3 years ago

At Michael’s school, 38% of the students have a pet dog and 24% of the students have a pet cat. Michael found that 11% of the st

Anastasy [175]

Answer:

Explanation:

b Roll out of sentence to the end result of sentence of the sentence I think that the

3 0

3 years ago

In what stage of systems development are design specifications created?

timofeeve [1]

The stage of systems development in which design specifications (such as the architecture, the modules, the interfaces, and the data) are created is the stage of systems design. The purpose of systems design is primarily to satisfy the specified requirements.

5 0

3 years ago

Assign a pointer to any instance of searchChar in personName to searchResult.#include #include using namespace std;int main() {c

Firlakuza [10]

Answer:

Here it the solution statement:

searchResult = strchr(personName, searchChar);

This statement uses strchr function which is used to find the occurrence of a character (searchChar) in a string (personName). The result is assigned to searchResult.

Headerfile cstring is included in order to use this method.

Explanation:

Here is the complete program

#include<iostream> //to use input output functions

#include <cstring> //to use strchr function

using namespace std; //to access objects like cin cout

int main() { // start of main() function body

char personName[100]; //char type array that holds person name

char searchChar; //stores character to be searched in personName

char* searchResult = nullptr; // pointer. This statement is same as searchResult = NULL

cin.getline(personName, 100); //reads the input string i.e. person name

cin >> searchChar; // reads the value of searchChar which is the character to be searched in personNa,e

/* Your solution goes here */

searchResult = strchr(personName, searchChar); //find the first occurrence of a searchChar in personName

if (searchResult != nullptr) //if searchResult is not equal to nullptr

{cout << "Character found." << endl;} //displays character found

else //if searchResult is equal to null

{cout << "Character not found." << endl;} // displays Character not found

return 0;}

For example the user enters the following string as personName

Albert Johnson

and user enters the searchChar as:

Then the strchr() searches the first occurrence of J in AlbertJohnson.

The above program gives the following output:

Character found.

8 0

3 years ago