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Sedaia [141]
3 years ago
8

Qual foi o primeiro computador no mundo a ser criado e qual é a hitória por trás?

Computers and Technology
1 answer:
Bess [88]3 years ago
4 0

Answer:

Espero que isso ajude você!

Explanation:

O ENIAC foi inventado por J. Presper Eckert e John Mauchly na Universidade da Pensilvânia e começou a construção em 1943 e só foi concluído em 1946. Ocupava cerca de 1.800 pés quadrados e usava cerca de 18.000 tubos de vácuo, pesando quase 50 toneladas.

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Upgrading only the motherboard will give some performance improvement to a computer system. Why would the improvement be limited
snow_tiger [21]
The motherboard connects different components of a computer system together. if you wanted improvement you would upgrade the CPU, RAM, GPU and maybe cooling.
6 0
3 years ago
Write function d2x() that takes as input a nonnegative integer n (in the standard decimal representation) and an integer x betwe
Rufina [12.5K]

Answer:

The function in Python is as follows:

def d2x(d, x):

   if d > 1 and x>1 and x<=9:

       output = ""

       while (d > 0):

           output+= str(d % x)

           d = int(d / x)

       output = output[::-1]

       return output

   else:

       return "Number/Base is out of range"

Explanation:

This defines the function

def d2x(d, x):

This checks if base and range are within range i.e. d must be positive and x between 2 and 9 (inclusive)

   if d >= 1 and x>1 and x<=9:

This initializes the output string

       output = ""

This loop is repeated until d is 0

       while (d > 0):

This gets the remainder of d/x and saves the result in output

           output+= str(d % x)

This gets the quotient of d/x

           d = int(d / x) ----- The loop ends here

This reverses the output string

       output = output[::-1]

This returns the output string

       return output

The else statement if d or x is out of range

<em>    else:</em>

<em>        return "Number/Base is out of range"</em>

<em />

4 0
3 years ago
The _____ class can be used to get user input using dialog boxes.
Ber [7]

Answer:

JOptionPane

Explanation:

  • The class "JOptionPane" are used to pop / create dialogue boxes for the user to enter the input for a question.
  • JOptionPane contains methods to create input dialogue boxes, message dialogue boxes, option dialogue boxes and confirm dialogue boxes.
  • The dialogue boxes can be just message dialogue boxes which gives some message to the user. It doesn't require anything to be input from the user. It is just a message box.
  • Where as input dialogue box requires the user to input something.
  • Confirm dialogue box asks the user to answer a question yes / no / cancel.
  • Option dialogue box asks the user to select the options.
  • So, option (d) JOptionPane is the answer for the question.
  • Option (a), (b) and (c) are used for different purposes but not to create dialogue boxes. So, options (a), (b) and (c) are not the correct answers for the question.
4 0
3 years ago
write a c++program that allows the user to enter the last names of fivecandidates in a local election and the number of votes re
madreJ [45]

Answer:

#include<iostream>

#include<stdlib.h>

using namespace std;

int main(){

   //initialization

   string str1[5];

   int arr_Vote[5];

   int Total_Vote=0,max1_Index;

   int max1=INT_MIN;

   //loop for storing input enter by user

   for(int i=0;i<5;i++){

       cout<<"Enter the last name of candidate: "<<endl;

       cin>>str1[i];

       cout<<"Enter the number of vote receive by the candidate: "<<endl;

       cin>>arr_Vote[i];

       //calculate the sum

       Total_Vote = Total_Vote + arr_Vote[i];

       //find the index of maximum vote

       if(arr_Vote[i]>max1){

           max1=arr_Vote[i];

           max1_Index=i;

       }

   }

   //display

   cout<<"\nThe output is......"<<endl;

   //loop for display data of each candidate

   for(int i=0;i<5;i++){

       cout<<str1[i]<<"\t"<<arr_Vote[i]<<"\t"     <<float(arr_Vote[i]*100)/Total_Vote<<"%"<<endl;

   }

   //display winner

   cout<<"The winner candidate is"<<endl;

   cout<<str1[max1_Index]<<"\t"<<arr_Vote[max1_Index]<<"\t"<<float(arr_Vote[max1_Index]*100)/Total_Vote<<" %"<<endl;

}

Explanation:

Create the main function and declare the two arrays and variables.

the first array for storing the names, so it must be a string type. second array stores the votes, so it must be int type.

after that, take a for loop and it runs for 5 times and storing the values entered by the user in the arrays.

we also calculate the sum by adding the array data one by one.

In the same loop, we also find the index of the maximum vote. take an if statement and it checks the element in the array is greater than the max1 variable. Max1 variable contains the very small value INT_MIN.

If condition true, update the max1 value and update the max1_Index value.

The above process continues for each candidate for 5 times.

After that, take a for loop and display the data along with percentage by using the formula:

Vote\,percent=\frac{Vote\,receive*100}{Total\,vote}

the, finally display the winner by using the max1_Index value.  

5 0
3 years ago
The seven basic parts of a computer are
True [87]
Monitor, keyboard, CPU, mouse, and I believe the USB drive , DVD drive and hardware system
4 0
2 years ago
Read 2 more answers
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