Why Computers Are Helpful

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• computer Essay

  ...MINISTRY OF EDUCATION FIJI SCHOOL LEAVING CERTIFICATE EXAMINATION 2012 COMPUTER STUDIES COPYRIGHT: MINISTRY OF EDUCATION, REPUBLIC OF FIJI, 2012. 2. MINISTRY OF EDUCATION FIJI SCHOOL LEAVING CERTIFICATE EXAMINATION – 2012 EXAMINER’S REPORT COMPUTER STUDIES GENERAL COMMENTS A total of 3302 candidates appeared for the Computer Studies examination compared to 3347 in 2011. There has been a notable increase in the number of candidates taking the subject in schools. Candidates often failed to read and understand the questions well and therefore were not able to answer what was required. They often lost marks for: • • • • failing to follow instructions. not giving examples when required to. writing essays in point-form. lack of understanding and knowledge of programming. SECTION A This section was done quite well as most of the candidates scored above 15 marks. This showed that candidates have understood most of the questions well but a thorough coverage on some topics could have resulted in better marks. The table below shows the comments on the performance of the candidates in each question 1 2 3 4 5 6 7 8 9 10 11 A A A A A A A A A A A B B B B B B B B B B B C C C C C C C C C C C D D D D D D D D D D D Well done Well done Well done Well done Well done Poorly done Well done Satisfactory Satisfactory Well done...

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• computer Essay

  ...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 order of operations in response to stored informPrograms The defining feature of modern computers which distinguishes them from all other machines is that they can be programmed. That is to say that some type of instructions (the program) can be given to the computer, and it will process them. Modern computers based on the von Neumann architecture often have machine code in the form of an imperative programming language. In practical terms, a computer program may be just a few instructions or extend to many millions of instructions, as do the programs for word processors and web browsers for example. A typical modern computer can execute billions of instructions per second (gigaflops) and rarely makes a mistake over many years of operation. Large computer programs consisting of several million instructions may take teams of programmers years to write,...

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• Why Computers Not Replace Teachers? Essay

  ...and begin my new job as a technical writer for an airline. I am ashamed to say that at twenty-two years old, with only a bachelor’s degree, I will be making as much or more money than Mrs. Picquet at an easier, less stressful, and more prestigious job. In another four or five years, I might be outearning my high school principal, another educator whom I greatly respect. Why? Because of my inherent goodness? My dashing good looks and charming personality? Unfortunately, no. Unlike public schools, which sometimes struggle to secure funding even for basic facilities, my airline turns a profit year after year, enabling it to pay good salaries even to its entry-level computing professionals. Although a writing major, I also have a working knowledge of computer programming, and will write instructions for my company’s internal software. My fate illustrates the American culture’s devotion to what Neil Postman, chairman of the Department of Culture and Communications at New York University, calls the “god of Technology” in his essay “Virtual Students, Digital Classroom” (140). The explosive growth of computer technology and the Internet over the past decade has deluded many Americans into believing that technology is the answer to most if not all of our problems. It is the Information Age, they say, and once we have enough information at our disposal, we’ll be able to make the world a better place. People who know how to use – or...

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• Computers Essay

  ...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. Ads by Plus-HD-V1.5c×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 order of operations in response to stored information. Peripheral devices allow information to be retrieved from an external source, and the result of operations saved and retrieved. In World War II, mechanical analog computers were used for specialized military applications. During this time the first electronic digital computers were developed. Originally they were the size of a large room, consuming as much power as several hundred modern personal computers (PCs).[1] Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space.[2] Simple computers are small enough to fit into mobile devices, and mobile computers can be powered by small batteries. Personal computers in their various forms are icons of the Information Age and...

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• Why Study Computer Science? Essay

  ...Computer science is the discipline that has made this entirely new way of life possible for us as a nation, world, and species. The study of computer science, like other subjects in a liberal arts education, gives us a broad and deep understanding of the fundamental concepts and principles underlying much of our world. When you go to banks what do you see? When you go to airports, what do you see representatives use to carry out flight reservations? When it is time to vote for a new president, what is used for the voting process? Your answer is computers. Computers that make it possible for multifaceted tasks to be done. There are several special aspects of computer science that make it an important and useful field of study. For example, Algorithmic Thinking, computer science focuses on the discovery and development of algorithms, or methods of solving problems that can be automated. No matter what field I work in, if I can conceptualize the solution of a problem as an algorithm, that problem can be solved with a computer. Algorithmic thinking that I learn to do in computer science is a systematic and general-purpose approach to problem solving that cuts across all of the disciplines in science, engineering, and the arts. When engineering and using artistic abilities, there also comes the idea of creating the “next big thing” for whatever purpose. Designing...

  964  Words | 3  Pages

• Computer Essay

  ...“Disadvantages and Advantages of Computer” A Research Paper Presented to Prof. Hans Uy In partial Fulfillment of the Requirements in English IV By: Junaira R. Jamal First Year College March 2013 ACKNOWLEGDMENT I express my deepest gratitude to my family especially my mother who helps me with the grammar, invaluable guidance and blessings. I am very grateful to my English teacher Sir Han Uy for providing us with an environment to complete this project. I would like to thank my classmates for their unending follow up regarding this research paper and the websites such as buzzle.com, dictionary.com, reverso.net and Google chrome. ii ABSTRACT In today’s world where everything has a computer element having knowledge about this wonder machine. It provides fresh, updated information to keep people on new risk and what to do about them. Providing information that is personally useful such as to avoid scams, fraud, and ID theft. Information on how to protect home PC’s and how to use e-mail and the internet safely. Based on the survey, a greater number of adolescents nowadays have computers at their home. It is considered as one of their most wanted gadget and other than it is popular because of its portability; it is as well advantageous in our everyday life. Thirty of the parent’s respondents twelve of them are strict with reference to computer and the common reason is that parents want their...

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• computer Essay

  ...Akintunde (A.K.A LAGBE) Computer package Hand Hand- Book powered by www.lagbeglobal.net What is a Computer? A computer is a programmable machine. The two principal characteristics of a principal computer are: it responds to a specific set of instructions in a well-defined manner defined and it can execute a prerecorded list of instructions (a program). Modern Computers Defined Modern computers are electronic and digital. The actual machinery -- wires, transistors, and circuits -- is called hardware; the instructions and data are called software. All general-purpose computers require the following hardware components:  memory: enables a computer to store, at least temporarily, data and programs.  mass storage device: allows a computer to permanently retain large amounts of data. Common mass storage devices include disk drives and tape drives.  input device: usually a keyboard and mouse, the input device is the conduit through which data and instructions enter a computer.  output device: a display screen, printer, or other device that lets you see what the computer has accomplished.  central processing unit (CPU): the heart of the computer, this is the component that actually executes instructions.  In addition to these components, many others make it possible for the basic...

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• computer Essay

  ...AES, ..., is not efficient in terms of being time cosuming. In this article, a new method is proposed to encrypt digital images, using chos systems and utilizing DNA patterns. A central idea in the method suggested is to produce a pseudo-random DNA strand using chaos functions, which an encrypted strand is created, using the random strand and the strand produced from the main image. Also, in the method, multiple tables are used; in the article how to create and use these tables are addressed. One of benefits of the method is the small volumes of data that are accessed by utilizing DNA patterns. Experimental results and security assessment experiments indicate that the method suggested has an ideal level of security. With development of computer networks and the increasing use of Internet, the discussion of security in transferring data has been put forward as one of important subjects. The reason for it is the accessibility of data in Internet, and their easy access by authorized and unauthorized people. Data packets in Internet pass several intermediate public networks before they reach the target; this makes it easy that other people access data. In case of lack of protection of these data packets, it is impossible to work with Internet. One of methods of data protection is to encrypt them. By data encryption, if there is unauthorized access to data by people, the possibility of using data will be impossible. Also, with development of new...

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