Questions and Answers for Computer Science

Computer Science

What is the need of data structures?

Data structures are used as a framework for organizing and storing information in virtual memory forms. In computing, RAM and virtual memory, such as the Cloud or other shared storage systems,...

Latest answer posted September 10, 2019 1:30 pm UTC

3 educator answers

Computer Science

Describe and give examples of the following?·          Anti-virus software ·          Firewalls ·          Anti-spy...

To add to the previous post Examples of anti virus software include McAffee, Norton, and AVG. These are programs that the public can purchase to protect their computers from malware, viruses, logic...

Latest answer posted May 30, 2010 6:10 pm UTC

2 educator answers

Computer Science

Advantages Of Computer

Computers offer users many advantages, including increased flexibility, speed, and access to a wealth of information. While there are some disadvantages to computers, mostly the positives far out...

Latest answer posted July 26, 2019 2:46 pm UTC

2 educator answers

Computer Science

What are some examples of real time operating systems and why are they needed?

Real time operating systems are generally special-purpose ones designed to run embedded or specialized systems. These systems often operate in environments where there are significant constraints...

Latest answer posted March 23, 2017 2:40 pm UTC

2 educator answers

Computer Science

How is hardware different from software? Give two reasons why hardware is useless without software? I need this...

The term hardware refers to the physical components of a computer. On its own, hardware simply consists of various pieces of metal, plastic, and other materials. Hardware without software is rather...

Latest answer posted August 13, 2018 1:29 am UTC

2 educator answers

Computer Science

What are the types and the advantages of operating systems?

An operating system is a user interface that helps control and manipulate computer functions. There are several different types, but their basic functions are all the same. First of all, there is...

Latest answer posted October 14, 2019 7:52 pm UTC

3 educator answers

Computer Science

In a pseudocode program,,,write a program that computes and displays a 15b percent tip when the price of a meal input...

To accomplish the completion of this program, you would only need a single function to determine the tip total. The function would look something like this: public float getTip(float mealPrice) {...

Latest answer posted October 5, 2017 11:16 pm UTC

1 educator answer

Computer Science

What are the advantages of Data Dictionary as applied in computer system analysis and design?

The data dictionary was created as a programming tool to address the problem of managing large datasets over long periods of time. For major software projects, such as airline reservation systems,...

Latest answer posted July 12, 2015 3:31 pm UTC

2 educator answers

Computer Science

Which was the first computer language?

It is difficult to clearly state the first computer language, because the machines went through a series of changes and developments. In other words, the programming language was different for...

Latest answer posted October 2, 2018 7:51 am UTC

2 educator answers

Computer Science

Define operating system. What are the functions and types of operating systems?

The operating system is the most important program that is on a computer. The operating system basically runs the computer and allows other programs to run as well. The operating system does all...

Latest answer posted January 9, 2010 1:59 pm UTC

1 educator answer

Computer Science

What are the main functions of a computer?

Computers use inputs and outputs to do various tasks. Computers receive programs in various codes and use them to do complex tasks. The first computers were the size of a room and relied on a...

Latest answer posted January 11, 2019 10:57 pm UTC

2 educator answers

Computer Science

Create a Java class called "product" with three data elements: name, price per unit, and quantity. Use accessor and...

The class is pretty straightforward: it is public, and it contains three private members, three public constructors with different sets of parameters, three public accessors, and three public...

Latest answer posted September 16, 2020 9:18 am UTC

1 educator answer

Computer Science

What are operating system functions?

When most end-users encounter computers, they are working on what are sometimes referred to as "virtual machines." In other words, when you interact with a computer or smart phone, there are many...

Latest answer posted August 2, 2016 12:37 pm UTC

1 educator answer

Computer Science

What Is Recursion In Programming?

Many tasks in computer programs need to be repeated. Normally, the code used for this is iterative, instructing the computer to perform a series of operations multiple times until certain...

Latest answer posted July 26, 2020 2:35 pm UTC

1 educator answer

Computer Science

The history of computer and it development. What are the types of computer languages?

Part of the history of the computer cannot be told without the emergence of the personal computer. Ed Roberts, the President of a company named MITS Incorporated, oversaw a company that made...

Latest answer posted January 4, 2010 8:47 pm UTC

1 educator answer

Computer Science

How can computer chips be made smaller? Why is the idea impractical?

There are basically three ways to make computer chips smaller. One is to make transistors smaller, another is to make chips with fewer transistors and a third possibility is to use software to make...

Latest answer posted April 8, 2016 2:28 pm UTC

1 educator answer

Computer Science

Describe the history of the computer. computer history

The early components that would contribute to the development of the computer were invented back in 1939, when Hewlett Packard invented their first product. "Their first product was the HP 200A...

Latest answer posted June 20, 2009 11:00 pm UTC

1 educator answer

Computer Science

How can I connect to the US Google server directly?

Google provides search results customized for many countries. This modifies the results for any search term by giving preference to sites that cater to that country or which are in the language...

Latest answer posted April 10, 2011 5:00 pm UTC

1 educator answer

Computer Science

How does RAM memory work in a computer?

RAM memory stands for "random access memory" and is vital to a computer's performance. Think of it like a computer's "short term memory." The computer stores things there temporarily while it...

Latest answer posted December 16, 2009 4:33 am UTC

1 educator answer

Computer Science

When did artifical intelligence research start?

The creator of Artificial Intelligence studies begins with the work of pioneer computer scientist Alexander Turing (1912-1954) who in the 1930's evolved a concept of a "Turing Machine." This was...

Latest answer posted April 16, 2010 4:24 am UTC

1 educator answer

Computer Science

What is a computer? Provide a definition and explain its operating system.

According to the Merriam-Webster Dictionary, a computer is “a programmable usually electronic device that can store, retrieve, and process data.” The first programmable computer, the Z1, was...

Latest answer posted January 25, 2019 9:51 pm UTC

1 educator answer

Computer Science

What is the 8086 processor and its use?

About thirty years ago, the 8086 processor was extremely innovative and important. But this processor is, of course, completely obsolete today. However, it continues to have some impact because...

Latest answer posted December 23, 2009 10:30 pm UTC

1 educator answer

Computer Science

When was the first computer invented?

It really depends on what you are going to call a "computer." The first meaning of the word applied to a person who could do complex calculations quickly, so in that case I think we'd have to get...

Latest answer posted April 27, 2010 3:30 am UTC

1 educator answer

Computer Science

Write a program that accepts values for a floating point array of any size, finds the sum, mean, and smallest values...

/* FunWithArray.c */ #include <stdio.h> #include <stdlib.h> #define MAXSIZEOFARRAY 100int main() { int intArraySize, count; double dblArraySum, dblArrayMean, dblArraySmallest =...

Latest answer posted November 27, 2008 8:44 pm UTC

1 educator answer

Computer Science

In 2013, which of these theories was adjusted to account for advances in technological development: Moore's law,...

Moore's Law was really not intended as a statement about computer science but simply a rule of thumb about the progress of chip-making during a specific period based on an observation made by...

Latest answer posted April 8, 2016 1:41 pm UTC

1 educator answer

Computer Science

In the history of computing why is the Internet one of the most significant technological advances?

In Thomas Friedman's breakthrough book The World is Flat, chapter 2 talks about "The Ten Forces that Flattened the World". The breaking of the Berlin Wall World Wide Web/Netscape Productivity...

Latest answer posted March 16, 2013 12:13 pm UTC

1 educator answer

Computer Science

In the history of computing, why has the miniaturization of high speed computing power been one of the most...

The miniaturization of high speed computer power is referred to, in the book The World is Flat by Thomas Friedman, as "the steroids". When the Internet made a social impact in 1995 via Netscape and...

Latest answer posted March 16, 2013 12:58 pm UTC

1 educator answer

Computer Science

Describe the advancements over the past 150 years that led to the digital culture.

What we experience today as the Digital Age came about by the work of many over many years, some of whom are briefly described here. Starting in the mid 1800's, Charles Babbage worked out all the...

Latest answer posted November 30, 2008 6:54 pm UTC

1 educator answer

Computer Science

CFP:2010 Congress on Computer Applications and Computational Science, Singapore [EI Compendex,ISTP,IEEE Xplore] [...

I’ve looked over the information thoroughly, and it doesn’t seem as if there is anything to disucss. No discussion question has been asked. Is there something about this that you want us to...

Latest answer posted April 21, 2010 9:01 am UTC

1 educator answer

Computer Science

What is the difference between hardware and software?

"Hardware" refers to any physical device in computing. If it is something you can touch and see, such as the computer screen, the keyboard, the printer, or the mouse, it is part of the hardware....

Latest answer posted September 30, 2019 10:18 am UTC

1 educator answer

Computer Science

How can you use a Google Doc document collaboratively with others?

I think that one of the most basic ways in which a Google doc can operate in a collaborative setting is that it enables other to make changes to it. When a Google doc is started by one person, it...

Latest answer posted December 14, 2012 12:02 pm UTC

1 educator answer

Computer Science

Who was Herman Hollerith?  Why is he important?

Herman Hollerith lived from 1860 to 1929. Of German heritage, he was born in Buffalo, NY, and studied mining engineering – ultimately receiving his PhD from Columbia in 1890. He later went to...

Latest answer posted January 2, 2009 9:02 am UTC

1 educator answer

Computer Science

What is the difference between computer engineering and computer science?

You know, this question is actually a really tricky one to answer for anyone who is not a part of that world. And those who are "part of that world" seem to have trouble explaining it in ways that...

Latest answer posted April 30, 2010 11:14 pm UTC

1 educator answer

Computer Science

Describe the various threats posed by hackers,viruses and spyware Describe the various threats posed by hackers,...

Another kind of danger is one of national security. All sorts of vital functions of the nation are dependent on the internet. In past years, there has been evidence of the Chinese (among others)...

Latest answer posted March 7, 2011 2:35 pm UTC

2 educator answers

Computer Science

How do computers function?  

Computers originated not so much with a technology but with an idea. That idea was that it is possible to break down complex activities, whether procedures or mathematical computations, into a...

Latest answer posted July 18, 2016 7:37 pm UTC

1 educator answer

Computer Science

Inspite of the RAM being volatile what is the incentive for installing more RAM in a computer.

RAM or random access memory is a form of memory that can be accessed at a very fast rate. It is used by the central processing unit or CPU to write and read data as it performs its operations. The...

Latest answer posted March 18, 2012 2:00 am UTC

1 educator answer

Computer Science

What is Moore's law?

If you look at the recent history of computers and microchips, the technology has gotten much smaller, faster, and less expensive. Moore's Law basically states that the number of transistors that...

Latest answer posted September 30, 2010 3:18 pm UTC

1 educator answer

Computer Science

What are the requirements for becoming a data security analyst?

To become a data security analyst you must have a minimum of a two-year college Associate degree. These two-year degrees are often geared to the local job market and useful for acquiring local...

Latest answer posted April 23, 2010 8:44 am UTC

1 educator answer

Computer Science

What is the difference between client-side and server-side programming? means how we can defer them

The major difference between these two kinds of programming is where the program runs. Client-side programming runs on the client's computers while server-side programming runs on the company's...

Latest answer posted December 26, 2009 12:41 am UTC

1 educator answer

Computer Science

What is the definition of an operating system and what are some of its capabilities?

An operating system is software (or, sometimes, firmware) that manages and controls a computer, serving as an interface between various applications and the computer hardware. End users do not...

Latest answer posted August 25, 2016 7:43 pm UTC

1 educator answer

Computer Science

The A.M. Turing award is awarded in whose memory?

Alan Mathison Turing (1912-1954) was a British mathematician and a pioneer in the field of computer science and what is now known as Artificial Intelligence. Very early in WWII he made essential...

Latest answer posted December 21, 2008 3:32 am UTC

1 educator answer

Computer Science

Who makes the best anti-virus program without complications? 

There are a few things that can be stated. First, you can buy a program to protect you computer. If you go this route, you should get Norton anti-virus. This is the standard program that people...

Latest answer posted June 19, 2013 1:16 pm UTC

1 educator answer

Computer Science

Explain ‘Cryptography’ and the need for keys.

Cryptography is a means to keep data secure and in a form that can be understood only by someone who has the key to decrypt the data that has been encrypted. A key is basically a set of rules which...

Latest answer posted March 23, 2011 1:28 pm UTC

1 educator answer

Computer Science

Please. I have an I.T exam tomorrow; what is the difference between files and folders? Can you write me a description...

When computer program designers compiled taxonomies for storing information, they took as their paradigm the organization and vocabulary of the paper systems that preceded electronic storage....

Latest answer posted June 27, 2012 4:24 pm UTC

1 educator answer

Computer Science

What is a recently occurring security hole in a computer system program or other operating system?

Popular McAfee anti-virus and malware program company caused security troubles for corporate customers when an automatic update installed instructions to recognize a normal Windows file as a virus....

Latest answer posted April 23, 2010 2:02 am UTC

1 educator answer

Computer Science

What is a compound conditional expression?

A basic conditional expression is one in which a particular input variable is tested; the result of the same determines what the value of an output variable is. For example, consider the expression...

Latest answer posted June 26, 2013 2:14 am UTC

1 educator answer

Computer Science

Differentiate between interpreter and compiler

The instructions that a computer's hardware is able to understand are in the form of binary code which is a series of zeros and ones. When computers were invented all programming was done by...

Latest answer posted April 2, 2011 10:06 pm UTC

1 educator answer

Computer Science

What is "virtual reality?"

"Virtual reality" is a "reality" that is created within the constructs of a computer. It has no basis in actual physical constructs. Virtual reality (VR) is a computer-generated three-dimensional...

Latest answer posted March 31, 2011 2:13 am UTC

1 educator answer

Computer Science

How to create a web site of our own? i want to create it in Free!

I agree with readerofbooks, it would be helpful to know what kind of website you want. I would suggest that you try weebly (see the link below). You can sign up for free and you can actually...

Latest answer posted December 22, 2011 2:44 am UTC

2 educator answers

Computer Science

Hello I need help with the following program in borland c + + 5.02.! the application code. #include...

Although it is difficult to determine where the first error is coming from since you do not include your line numbers, the error on line 41 is that you have put an accent grave in your code instead...

Latest answer posted July 21, 2012 3:19 pm UTC

1 educator answer

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