Computer Concepts – Illustrated 8th edition Objectives * Define computers *Explore how computers work *Categorize computers *Examine personal computers *Introduce software *Introduce the Internet and the Web *Understand email basics Defining Computers Computer * An electronic device that: * Accepts input * Processes data * Stores data * Produces output * Uses instructions in stored programs Personal computer (PC) Computer system
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Table of contents Introduction……………………………..……………..1 Task1 The Media Used…………………………………………………….2 The Connectors Used…………………………..…….2 The Cost of cabling and installation…………………2 Fig. 1…………………………………………………….3 Recommandation……………………………………….4 Task2 Data Transfer rate and/or Memory Storage space..5 Hardware options……………………………………..5 Cost of Purchase and installation…………………...5 Fig .2 ………………………………………………….6 Recommandation……………………………………..7 Task3 Security Issues………………………………………8 Protection from
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Introduction to Computer Viruses It’s Saturday morning. You boot up your Windows 98 computer and lo and behold‚ the graphics on the desktop are a mirror image of what they should be. Congratulations‚ you have a computer virus! According to "Virus Bulletin‚" the Oxfordshire‚ England-based technical journal that tracks viruses‚ this new virus flips any uncompressed bitmaps horizontally‚ but only on Saturdays. This bulletin credits GriYo of the 29A virus-writing group as the author of this 32-bit
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NETWORK Computer Network also called Network is a group of computers and other devices connected to each other to share resources electronically. Networks can be as small as two computers or many thousand computers that are connected to one another. These computers are usually connected to one another through wires‚ satellite‚ and modems. Each device connected to the network is called a “node”‚ and the computer that is connected to the network is called a workstation. There are several ways
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Unit 203 Outcome 1 1.1: diversity is the difference between people; it includes such things as religion‚ culture‚ background and even personality. the reason diversity should be valued is because having a diverse world makes things interesting for everyone‚ if everyone was equally the same we wouldn’t have most of the stuff we have in the world right now‚ like different cultured food clothed all different types of religious events and so on. 1.2: trying to relate with people and listening to
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Introduction to Data Management and File management Most computers are used for data processing‚ as a big growth area in the “information age” Data processing from a computer science perspective: Storage of data Organization of data Access to data Processing of data Data Structures vs File Structures Both involve: Representation of Data + Operations for accessing data Difference: Data structures: deal with data in the main memory File structures: deal with the data in the
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of malware. They spread over computer networks by finding operating system vulnerabilities. Worms typically cause harm to their host networks by consuming bandwidth and shorting out web servers. Generally‚ the intent of the worm is to be malicious. There are some worms however‚ which do not have malicious intent. They are referred to as anti-worms. Computer worms are classified as a type of computer virus‚ but there are several characteristics that distinguish computer worms from regular viruses
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received. • Purchase orders - A purchase order is a document produced by a person or company to buy items or services required by that person‚ department or company. • Spreadsheet - A spreadsheet is usually a numerical document created on a computer used for calculating‚ sales‚ accounts creating graphs etc. There are other forms of documents such as reports‚ leaflets‚ flyers‚ posters‚ presentations and brochures but at Thermaplate International Ltd the main forms of communication used are the
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work are computer software like: Microsoft Word which is software used to create documents Excel is software that can be used for storing and organising data. Publisher is software which is used to create almost anything from documents to greeting cards. Could also use a fax machine‚ telephone and send emails. 1.2 Outline the benefits of using information technology for work tasks The benefits of using technology for work tasks include: Speed – A computer can search through files and records
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