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labwork [276]
3 years ago
12

What are the three main purposes of an operating system? Explain how the old mainframe computers were different from the compute

rs we have today.
Computers and Technology
1 answer:
lbvjy [14]3 years ago
3 0

Answer:(1) To manage the computer's resources, which includes central processing unit, memory, disk drives, and printers, (2) To establish a user interface

(3)To execute and provide services for applications software.

The old mainframe computers have

(1) low memory sizes

(2) slower connectivity speed

(3) Larger sizer

(4) low sophistication.

Explanation: Operating system is a system software that manages the computer resources,helps to establish user interface and it helps to provide services for application softwares.

Operating system software includes WINDOWS X,WINDOWS 7,WINDOWS 8,LINUX,etc.

Mainframe computers are computers used by large multinational companies for processing bulk data. Old mainframe computers were produced by IBM(INTERNATIONAL BUSINESS MACHINE) in the year 1952 they are classed two scientific and commercial mainframe computers with different information although they had some incompatibilities. Old mainframe computers are large in size with low processing speed, sophistication and storage compared to present day system.

You might be interested in
Write a function that accepts an argument for a persons name. The method should loop through the number of characters in the nam
MatroZZZ [7]

Answer:

#include <iostream>

#include<string.h>

using namespace std;

void printCharacter(string name){

   for(int i=0;name[i]!='\0';i++){

       cout<<name[i]<<endl;

   }

}

int main()

{

   string name;

   cout<<"enter the name: ";

   cin>>name;

   printCharacter(name);

}

Explanation:

first include the two libraries iostream for input/output and string library for using the string.

then, create the main function and declare the variable type string.

cout instruction is used o display the message on the screen.

cin is used to store the value in the name variable.

after that, call the function. The program control move to the the function. In the function for loop is used to print the character one by one until end of the name.

4 0
3 years ago
3. Q3: India is a user who needs to be able to see a list of the names of her friends (those whom she considers friends). There
Katyanochek1 [597]

In order to grant India access to a list of her friends, you should use a query by selecting name from person and use the inner join relationship on person.

<h3>What is query?</h3>

A query refers to a computational request for data that are saved in a database table, from existing queries, or even from a combination of both a database table and existing queries.

In this scenario, you can grant India access to be able to see a list of her friends with a structured query language (SQL) by selecting name from person and use the inner join relationship on person.

Read more on query here: brainly.com/question/25266787

3 0
2 years ago
Which type of game requires you to read people’s expressions to anticipate their moves?
Irina-Kira [14]

Answer:

Chess-type games

Explanation:

5 0
2 years ago
What is one purpose of an algorithm
adelina 88 [10]

Answer:

Algorithms is formula for solving a problem. It is helpful because it specifically give instructions detail to computer to what a computer should perform a specific task.

For e.g. calculating report cards.

4 0
3 years ago
Write a program that lets the user enter four quarterly sales figures for six divisions of a company. The figures should be stor
NeTakaya

Answer: Buisness calendars

Explanation:

7 0
2 years ago
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