A computer is a general purpose device that can be programmed to carry out a set of arithmetic or logical operations automatically. Since a sequence of operations can be readily changed‚ the computer can solve more than one kind of problem. Conventionally‚ a computer consists of at least one processing element‚ typically a central processing unit (CPU)‚ and some form of memory. The processing element carries out arithmetic and logic operations‚ and a sequencing and control unit can change the
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believe that computers are more a hindrance than a help in todays’s world. Others feel that they are such indispensable tools that they would not be able to live or work without them. - In what ways are computers a hindrance - What is your opinion? Nowadays we can see computers increase their popularity; however‚ using computer too much may lead to negative results. Some people believe that computers have more adverse effects than their helps while others comment that computers are necessary
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A computer is a machine that is able to take information (input)‚ do some work on or make changes to the information‚ to make new information (output). Computers have existed for much of human history. Examples of early computers are the astrolabe and the abacus. Modern computers are very different from early computers. They are now very powerful machines that are able to do billions of calculations every second. Most people have used a personal computer in their home or at work. Computers are
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In today’s society‚ billions of people across the world are accessing the internet multiple times a day. Why wouldn’t they? Many people have the internet on their smart phones‚ and at the touch of a button can check their email‚ their Facebook‚ their bank account balance‚ movie times‚ you name it. One of these things‚ however‚ usually consumes more of the user’s time than the others. Yes‚ you guessed it: Facebook. Any social networking site or application‚ actually‚ whether it be Facebook‚ Twitter
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does a VSAT network work? A VSAT network has three components: • A central hub (also called a master earth station) • The satellite • A virtually unlimited number of VSAT earth stations in various locations - across a country or continent Content originates at the hub‚ which features a very large -15 to 36-foot (4‚5 -11m)- antenna. The hub controls the network through a network management system (NMS) server‚ which allows a network operator to monitor and control all components of
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Switching & Routing The purpose of this paper is to provide a better understanding of switching and routing used in a network environment and familiarize the reader with various hardware and software associated with there functions. This paper will look at some switching concepts that will include store and forward switching‚ cut through switching‚ fragment free switching‚ and V-Lan. This paper will also cover routing concepts‚ along with some comparisons including routed vs. routing protocols
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CompTIA N10-004 N10-004 Network+ (2009) Practice Test Version 7.0 CompTIA N10-004: Practice Exam QUESTION NO: 1 After adding a new cable segment to the network‚ the technician should: A. Update the disaster recovery plan. B. Document the changes in the business continuity plan. C. Update the wiring schematics. D. Create a new baseline document. Answer: C QUESTION NO: 2 Which of the following devices can be used to breakup a broadcast domain? A. Unmanaged switch B. Router C. DHCP server
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EINSTEIN COLLEGE OF ENGINEERING Computer Architecture and Organization Lecture Notes-EC53 SUJATHA.K & JASMINE MARY.S TEXTBOOKS: 1. John P. Hayes‚ ‘Computer architecture and Organisation’‚ Tata McGraw-Hill‚ Third edition‚ 1998. 2. V. Carl Hamacher‚ Zvonko G. Varanesic and Safat G. Zaky‚ “ Computer Organisation“‚ V edition‚ McGraw-Hill Inc‚ 1996. Einstein College of Engineering UNIT 1 INTRODUCTION FUNCTIONAL UNITS OF A COMPUTER SYSTEM Digital computer systems consist of three distinct
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keyboard-8 bit Computer systems v Manual systems Benefits of computer system: Takes up less space Searching is very quick More than one person can access the same data form their network PC. The data stays in the computers memory Fewer staff are needed to look after a computer system Reports can be generated very quickly-automated Problems of a computer system: Setting up is very expensive Computer systems need people to maintain them POWER CUTS! It is easy to hack into a computer system.
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friends‚ and some post updates about their lives‚ but one thing that users may not realize is the effect that social media is having on society. Websites like Facebook and Twitter effect our lives negatively‚ positively‚ and a lot more than we think. We all have our different causes for liking social media‚ but we don’t always realize the important effects they are having on our lives. The first effect is bullying. As these websites become more popular‚ the number of kids being cyberbullied increases.
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