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KiRa [710]
3 years ago
9

What are the characteristics of 1st generation computers​

Computers and Technology
2 answers:
Sunny_sXe [5.5K]3 years ago
7 0

Answer:

Used vacuum tubes for circuitry.

Electron emitting metal in vacuum tubes burned out easily.

Used magnetic drums for memory.

Were huge, slow, expensive, and many times undependable.

Were expensive to operate.

Were power hungry.

Explanation:

 

maria [59]3 years ago
6 0

Answer:

<h2>Characteristics of first generation computers:</h2>

Explanation:

1)First generation computers used vacuum tubes.

2)Speed was slow and memory was very small.

3)They were huge in size taking up entire room.

4)They consumed a lot of power and generated so much heat.

5)Machine language was used in these computers.

6)Output was obtained on printouts through electric typewriter.

7)Input was based on punched cards.

8)First generation computers were expensive and unreliable.

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Answer:

Here is the JAVA program:

import java.util.Scanner;  //to accept input from user

public class Main {   //class name

  public static void main(String[] args) {  //start of main function

Scanner input =new Scanner(System.in);  // creates Scanner class object

int amount, quarters, dimes, nickels, pennies,change;   //declare variables

System.out.println("Enter the price of the(from 25 cents to a dollar, in 5-cent increments): ");  //prompts user to enter the price

amount=input.nextInt();   //reads amount from user

change= 100-amount;   //computes change

System.out.println("You bought an item for " + amount+" cents and gave me a dollar, so your change is :");  

quarters=change/25;  //computes quarters

change=change%25;  //computes quarter remaining

if(quarters == 1)   // if quarter is equal to 1

System.out.println(quarters+ " quarter");   //prints quarter value in singular

else if (quarters>1)   // if value of quarters is greater than 1

System.out.println(quarters+" quarters");     //prints plural quarters value

dimes=change/10;  //computes dimes

if(dimes == 1)   // if value of dime is equal to 1

System.out.println(dimes+ " dime");   //prints single value of dimes

else if (dimes>1)   //if value of dimes is greater than 1

System.out.println(dimes+" dimes");  //prints plural value of dimes

change=change%10;   //computes dimes remaining

nickels=change/5;  //computes nickels

if(nickels == 1)   //if value of nickels is equal to 1

System.out.println(nickels+ " nickel");   //prints single value of nickels

else if (nickels>1)   //if value of nickels is greater than 1

System.out.println(nickels+" nickels");   //prints plural value of nickels

change=change%5;    //computes nickels remaining

pennies=change;  //computes pennies

if(pennies == 1)   //if value of pennies is equal to 1

System.out.println(pennies+ " penny");   //prints single value of pennies

else if (pennies>1)    //if value of pennies is greater than 1

System.out.println(pennies+" pennies");     } }  //prints plural value of pennies

Explanation:

I will explain the program with an example:  

Suppose amount= 75  

Then change = 100 - amount= 100 - 75 = 25  

change = 25  

quarters = change/25 = 25/25 = 1  

quarters = 1  

change = change % 25 = 25%25 = 0  

dimes = 0/10 = 0  

Now all other values are 0.  

Now the following line is printed on screen:  

You bought an item for 75 cents and gave me a dollar. Your change is:  

Now program moves to if part  

if quarters == 1  

This is true because value of quarter is 1  

sot "quarter"   is displayed with the value of quarters

Now the following line is printed on screen:  

1 quarter  

So the complete output of the program is:  

You bought an item for 75 cents and gave me a dollar. Your change is:  

1 quarter

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