ECS-165A WQ’11 110 6. Storage and File Structures Goals Understand the basic concepts underlying different storage media‚ buffer management‚ files structures‚ and organization of records in files. Contents • • • • • Overview of Physical Storage Media Magnetic Disks‚ Tertiary Storage Buffer Management Storage Access File Organization Dept. of Computer Science UC Davis 6. Storage and File Organization ECS-165A WQ’11 111 Classification of Physical Storage Media • Main criteria: Speed with
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Lots of people accept the most invention that is computer. While people didn’t need to computers in the days of old‚ nowadays computers are used almost everywhere. The life without computer is impossible for people. Not only computer but‚ also internet. We are so much dependent on computers. Although PCs make many things esaier for us‚ there are some evidence that depending on computers brings negative results. Supporters of dependence on computers a good thing say that we can learn easily information
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deal with. Why should organization add to them? Computers are known to be the key factor of saving people from falling off the edge of their chair every time they were to have to think really hard. If an individual were to purchase a computer he/she should take the following into consideration: "Will this make my job easier? Do I need extra multimedia capabilities? Will I be using the Internet?" Many people go out and buy a computer without acknowledging what should be included in the
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LAPTOP A laptop computer is a personal computer for mobile use. A laptop has most of the same components as a desktop computer‚ including a display‚ a keyboard‚ a pointing device such as a touchpad (also known as a track pad) and/or a pointing stick‚ and speakers into a single unit. A laptop is powered by mains electricity via an AC adapter‚ and can be used away from an outlet using a rechargeable battery. Laptops are also sometimes called notebook. computers‚notebooks‚ ultrabooks or netbooks.
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A COMPUTER VIRUS A case study presented to Dr.Pedro D. Abanador In partial fulfilment of the requirements in the subject RES323- Research Methodologies Leading to the degree Bachelor of Science in Information Technology Presented by: Estimada‚ Ronald B. BSIT-3A2 February 4‚ 2014 CHAPTER I THE PROBLEM AND ITS BACKGROUND Introduction A computer virus is a small software program that spreads from one computer to another
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Computer Crime This type of crime is the illegal exploitation of computer technologies‚ usually involving the Internet‚ to support crimes such as fraud‚ identity theft‚ sharing of information‚ and embezzlement. Exactly what is illegal varies greatly from state to state. Consequently‚ the growth of international data communications and in particular the Internet has made these crimes both more common and more difficult to police. Luckily there are people fighting computer crime and it is taken very
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History of generations of Computers The computers that you see and use today hasn’t come off by any inventor at one go. Rather it took centuries of rigorous research work to reach the present stage. And scientists are still working hard to make it better and better. But that is a different story. First‚ let us see when the very idea of computing with a machine or device‚ as against the conventional manual calculation‚ was given a shape. Though experiments were going on even earlier
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ELEMENTS OF COMPUTER SYSTEM Computer System Is a complete‚ working computer. The computer system includes not only the computer‚ but also any software and peripheral devices that are necessary to make the computer function. 1. Hardware 2.Software 3.Peopleware / Live ware HARDWARE It is best described as a device that is physically connected to your computer or something that can be physically touched. INPUT DEVICE –any device that allows the person to communicate information to the computer / gives
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Introduction There is a profound effect of the computer revolution to our school‚ our home and our society in general. Computers plays a big role in different application such as airline industry‚ medicine‚ banking industry‚ television and movies‚ factory‚ offices‚ schools‚ business and even at home. Businesses are using computers to improve their efficiency‚ reduce their cost of operation‚ and to have a more timely and accurate reports. Indeed‚ computer as a result‚ produce a variety of benefits that
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OF TECHNOLOGY EDUCATION‚ KUMASI May 22‚ 2013 DEPARTMENT OF INFORMATION TECHNOLOGY EDUCATION ASSIGNMENT SYSTEMS ANALYSIS & DESIGN INDEX NUMBER 5101040060 LECTURER MAXWELL DORGBEFU JNR. i CONTENTS QUESTION 1 HUMAN COMPUTER INTERACTION (HCI) 1 REASONS WHY HUMAN-COMPUTER INTERACTION (HCI) IS RECOMMENDED TO SYSTEM ANALYSTS. 2 QUESTION 2 COST BENEFIT ANALYSIS (CBA) 3 TECHNIQUES USED IN PERFORMING COST BENEFIT ANALYSIS (CBA) IN INFORMATION SYSTEM DEVELOPMENT. 3 QUESTION 3 REAL WORLD SYSTEM PAYROLL
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