COMPUTER CONCEPTS A computer is a machine that processes data and performs tasks according to a set of instructions. To do anything‚ computer must be give specific directions to follow. They get these directions from software. Software‚ such as that used for word processing‚ is a set of step-by-step instruction for the computer‚ written by computer programmers in a programming language like BASIC‚ Pascal‚ or C. Computers also get instructions from you‚ the user. When you use the mouse (more
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CHAPTER ONE COMPUTER SYSTEM FUNDAMENTALS 1.1 Computer System as a Universal Tool A computer system is an electronic device that accepts inputs; transform the input through some processes to obtain output or information that can aid effective decision making. Information originated from raw data which by its own simple definition is any raw fact or figure that can be subjected to a form of manipulation before it can be trusted for decision making. Data can originate from various sources depending
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Classification of computers Created by: Valuta Iuliana Module: Information and Communication Technology Teacher: Peter Laszlo Created by: Valuta Iuliana Module: Information and Communication Technology Teacher: Peter Laszlo * Table of Contents 1 Types of computers 2 1.1 Microcomputers 3 1.2 Minicomputers 5 1.3 Mainframe computers 5 1.4 Supercomputer 5
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Computer Literacy For over fifty years‚ beginning with the famous ENIAC‚ a revolution has been taking place in the United States and the world. The personal computer has changed the way many people think and live. With its amazing versatility‚ it has found its way into every area of life‚ and knowing how to operate it is a requirement for today’s world. Those who have not taken the time to learn about computers often do not even know what to do once one has been turned on‚ and this problem
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Few industries have changed so much in such a short time as the computer industry‚ and the pace of change shows no sign of slowing. The computer now has a role in almost every aspect of modern life‚ and it has radically affected the way people work‚ play‚ study and organize their lives. As we enter the 21st century‚ computers are influencing ways of teaching and learning‚ as access to computers in schools is becoming more widespread and varied. Their use enables the learner to develop at his or
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Computer Maintenance Guide Do you get days where you feel like tearing your hair out‚ because your Pc will not operate in the manner which it did when you first bought it. Believe me you are not alone‚ this happens to most of us‚ especially if your Pc is a few years old and you have not given it the maintenance it requires. Pcs need to be kept in good condition and from time to time they have to be given a good clean out. In this E-book‚ I shall give you the steps which you need to carry
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"Computer forensics is the specialized practice of investigating computer media for the purpose of discovering and analyzing available‚ deleted‚ or "hidden" information that may serve as useful evidence in a legal matter. " (Steen‚ Hassell 2004) Computer forensics has become a very important factor of criminal investigations. Since computers have become mainstream the need for a science that will deal with the technology has become an issue for the judicial and legal system. Some of the areas computer
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Super Computer The fastest type of computer. Supercomputers are very expensive and are employed for specialized applications that require immense amounts of mathematical calculations. For example‚ weather forecasting requires a supercomputer. Other uses of supercomputers include animated graphics‚ fluid dynamic calculations‚ nuclear energy research‚ and petroleum exploration. The chief difference between a supercomputer and a mainframe is that a supercomputer channels all its power into executing a
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Chapter 1. Introduction to Computer Organization and Computer Evolution I. Computer Organization and Computer Architecture In describing computers‚ a distinction is often made between computer architecture and computer organization. Although it is difficult to give precise definitions for these terms‚ a consensus exists about the general areas covered by each. Computer Architecture refers to those attributes of a system visible to a programmer or‚ put another way‚ those attributes that have a
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Computer Architecture The circuitry in a computer which controls the manipulation of data is called the central processing unit‚ or CPU. In the machines of the mid-twentieth century‚ CPUs were large units comprised of perhaps several racks of electronic circuitry that reflected the significance of the unit. However‚ technology has shrunk these devices drastically. The CPUs found in today’s desktop computers and notebooks are packaged as small flat squares (approximately two inches by two inches)
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