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2 years ago

What was the first computer

Computers and Technology

1 answer:

rodikova [14]2 years ago

7 0

Answer:

This is a nuanced question. Define "computer".

Explanation:

It depends. There's not really a consensus on whether it's ABC or Programma 101. The ABC (Atanasoff-Berry Computer) came out in 1942. The Programma 101 came out in 1964.

The ABC was a huge vacuum tube contraption that weighed the same as three or four people. There was a design very similar to the ABC (I think it was called EINAC) but it was basically a copy and the patent for it was thrown out. The ABC wasn't patented.

If this is multiple choice then the answer is obvious. If not you're technically right either way. If it's Atari or something I will actually scream.

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What is a quick way to determine if a site might contain reliable information?

xz_007 [3.2K]

The best and most correct answer among the choices provided by the question is the fourth choice.

A way of determining that a site is realiable is examining comments about the webpage.
I hope my answer has come to your help. God bless and have a nice day ahead!

5 0

3 years ago

Read 2 more answers

The number of output for a decoder if the input is 4

WINSTONCH [101]

To get the number ot decoder output:

2^n; where n is number of input
2^4
2 × 2 × 2 × 2 = 16 outputs

3 0

3 years ago

Write a program that will prompt the user to enter an integer. The program should square the number and then print the squared n

Kay [80]

Answer:

// here is code in C++.

#include <bits/stdc++.h>

using namespace std;

// function to compute sum and product

void square(int input)

{

// variable to store the square of number

long long squ_num;

calculate the square of number

squ_num=pow(input,2);

// print the output

cout<<"square of "<< input<<" is: "<<squ_num<<endl;

}

// driver function

int main()

{

int n;

// read the number until user enter 0

do{

cout<<"enter a number!! (0 to stop):";

// read the input from user

cin>>n;

// call the function to calculate square of input number

square(n);

}while(n!=0);

return 0;

}

Explanation:

Declare a variable "n" to read the input number from user.Call the function square() with parameter "n".In this function, it will calculate the square of the input number and print it.This will repeat until user enter 0 as input.Program will ends when user give 0 as input.

Output:

enter a number!! (0 to stop):5

square of 5 is: 25

enter a number!! (0 to stop):7

square of 7 is: 49

enter a number!! (0 to stop):11

square of 11 is: 121

enter a number!! (0 to stop):0

3 0

3 years ago

Need some help writing a simple PYTHON Student registration program:

Y_Kistochka [10]

import random

database = {}

while True:

try:

user_choice = int(input("Enter your student id to bring up your information (Press enter if you don't have one) : "))

if user_choice in database:

print("Student ID:",database[user_choice][0],"\nFirst name:",database[user_choice][1],"\nLast name:",database[user_choice][2],"\nPhone number:",database[user_choice][3],"\nEmail address:",database[user_choice][4],"\nPassword:",database[user_choice][5],"\nPoints:",database[user_choice][6])

except ValueError:

name = input("Enter your first name: ")

last_name = input("Enter your last name: ")

phone_number = input("Enter your phone number: ")

email = input("Enter your email address: ")

password = input("Enter a password: ")

points = 100

student_id = random.randint(1,1000)

while student_id in database:

student_id = random.randint(1,1000)

print("Hello,",name,"your student ID is:",student_id)

database[student_id] = [student_id,name, last_name, phone_number, email, password, points]

I wrote my code in python 3.8. I hope this helps.

6 0

2 years ago

Write a program whose input is an email address, and whose output is the username on one line and the domain on the second. Exam

kirill115 [55]

Answer:

1 void parseEmailAddress(string email, string& username, string& domain)

2 {

3 int found = email.find("@")

4 if (found > 0)

5 {

6 username = email.substr(0, found);

7 domain = email.substr(found+1, -1);

8 }

9 return;

10}

Explanation line by line:

We define our function.
We use an open curly bracket to tell the program that we are starting to write the function down.
We apply the find method to the email variable that was passed by the main program. The find method tells us where is the "@" located within the email.
We use an if statement to ensure that the value that we found is positive (The value is negative if an only if "@" is not in the email address).
We use an open curly bracket to tell the program that we are starting to write inside the if statement.
We apply the substr method to the email to take the username; it receives a start and an end value, this allows us to take from the beginning of the email (position 0) until the "@".
We apply the substr method to the email to take the domain; it receives the position of the "@" character plus one to take the first letter after the "@" and a minus-one representing the last character on the email.
We use a closing curly bracket to tell the program that the if statement has finished.
We return nothing because we are using reference parameters, which means that the memory positions of username and domain are going to be filled by our parseEmailAddress function and the main function can access those values directly.
We use a closing curly bracket to tell the program that the function has finished.

6 0

3 years ago