...UNIT 1 A Introduction to computers Unit 1 WUC 117/03 Introduction to Computing and Internet Introduction to Computers B WAWASAN OPEN UNIVERSITY WUC 117/03 Introduction to Computing and Internet COURSE TEAM Course Team Coordinator: Mr. Kevin Tan Pooi Soo Content Writer: Ms. Parasathy Daivasigamani Instructional Designer: Ms. Jeanne Chow Academic Members: Mr. Chandarasageran a/l Natarajan and Mr. Ishan Sudeera Abeywardena COURSE COORDINATOR Mr. Kevin Tan Pooi Soo EXTERNAL COURSE ASSESSOR Associate Professor Norhaziah Md Salleh PRODUCTION Editor: Mr. Terence Too Yang-Yau In-house Editor: Ms. Jeanne Chow Graphic Designers: Ms. Patsy Yap and Ms. Leong Yin Ling Wawasan Open University is Malaysia’s first private not-for-profit tertiary institution dedicated to adult learners. It is funded by the Wawasan Education Foundation, a tax-exempt entity established by the Malaysian People’s Movement Party (Gerakan) and supported by the Yeap Chor Ee Charitable and Endowment Trusts, other charities, corporations and members of the public. The course material development of the university is funded by Yeap Chor Ee Charitable and Endowment Trusts. © 2008 Wawasan Open University First revision S1 2011 All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without prior written permission from WOU. Wawasan Open...
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...Topics: Chapter 1 – Working Together Computers are everywhere. Watching television, driving a car, using a charge card, ordering fast food, and the more obvious activity of typing a term paper on a personal computer, all involve interaction with computers. For one day, have each member of your team make a list of every computer he or she encounters (be careful not to limit yourselves just to the computers you see). Meet with the members of your team and combine your lists. Consider how each computer is used. How were the tasks the computers perform done before computers? Use PowerPoint to create a group presentation and share your findings with the class. Chapter 2 – Working Together This chapter lists 12 types of Web sites: portal, news, informational, business/marketing, educational, entertainment, advocacy, blog, wiki, online social network, content aggregator, and personal. Working as a team, use the Internet to find at least two examples of each type of Web site. For each Web site, identify the Web address, the multimedia elements used, the purpose of the Web site, and type of Web site. Explain why you classified each site as you did. Then, keeping in mind the purpose of each Web site, rank the sites in terms of their effectiveness. Share your findings in a report and/or a PowerPoint presentation with the class. Chapter 3 – Working Together In any software application, each program is not exactly the same. Different spreadsheet programs, for example...
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...Essential Introduction to Computers 1. Define the term computer and discuss the four basic computer operations: input, processing, output, and storage 2. Define data and information 3. Explain the principle components of the computer and their use 4. Describe the use and handling of floppy disks and hard disks 5. Discuss computer software and explain the difference between system software and application software 6. Identify several types of personal computer application software 7. Discuss computer communications channels and equipment and the Internet and World Wide Web 8. Explain how to purchase, install, and maintain a personal computer, a notebook computer, and a handheld computer 9. Define e-commerce 1. Computer: Input, Processing, Output, and Storage In today's world, computers are used for almost every task imaginable. Routine activities such as paying bills, buying groceries, or communicating with a friend can be done with a computer. That is why it is important not only to know how to use a computer, but also to understand the components of a computer and what they do. Recent studies report that almost 40% of homes surveyed have personal computers, and this number is growing. Given the widespread use of computers, computer literacy - a knowledge and understanding of computers and computer uses - has become an essential ingredient in the recipe for success in today's world. Florida was the first state to demand computer literacy...
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...Introduction to Computer Security CSE 3482 Introduction to Information/Computer Security Instructor: N. Vlajic, Winter 2014 Learning Objectives Upon completion of this material, you should be able to: • Describe the key security requirements of confidentiality, integrity and availability (CIA). • Describe the CNSS security model (McCumber Cube). • Identify today’s most common threats and attacks against information. • Distinguish between different main categories of malware. Required Reading Computer Security, Stallings: Chapter 1 Computer Security, Stallings: Chapter 6 Introduction • Information Technology – technology involving development & use of computer systems & networks for the purpose of processing & distribution of data in many organizations, information/data is seen as the most valuable asset categories of IT jobs: IT administrator - installs, maintains, repairs IT equipment IT architect - draws up plans for IT systems and how they will be implemented IT engineer - develops new or upgrades existing IT equipment (software or hardware) IT manager - oversees other IT employees, has authority to buy technology and plan budgets Introduction (cont.) • Information System – entire set of data, software, hardware, networks, people, procedures and policies that deal with processing & distribution of information in an organization each component has its own strengths, weaknesses, and its own security requirements information...
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...Since my freshman year of high school, I have used a computer for at least an hour (a conservative minimum) virtually every single day. At one point I would return from soccer practice at 6pm, shower, eat dinner, and then play about three hours of computer games before beginning my homework. My friends and I would plan computer game matches during 4 th period calculus rather than pay attention. My vision has declined since then from 20/20 to 20/25. I can easily spend hours on the computer, but I often tell myself that I do not have time to go running. The first thing I do when I return to my apartment is check my email. When I experience “writer's block” while using Microsoft Word, I have an overpowering urge to sign onto AOL Instant Messenger. Once “online,” I find it extremely difficult to sign off. Help me, Dr. Phil. The inspiration of this project is based on the following assumptions: A significant amount of college students share my experience of computer abuse. They find themselves staying on their computers longer than expected and sacrificing their daily objectives as a consequence. Because time is a scarce resource, computer use must be replacing other activities. Also, as the technology sector grows, jobs are becoming less physically demanding. Many employees sit down for hours, whether they are secretaries, programmers, researchers, administrative officials, etc, concentrating on small characters on their computer monitors. Not only is this substituting more active...
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...CSS150-1302B-04 Introduction to Computer Security Phase 3: Discussion Board 3 Networks, Cryptography, and Malicious Activity Professor: Shawn Murray June 5, 2013 In this paper I will discuss a malicious computer worm that spread rather quickly and affected thousands of people and targeted a company in Utah. I will discuss how the worm spread in detail. Lastly, I will discuss how to prevent / defend against such worms. On January 26, 2004 MyDoom, also known as W32.MyDoom@mm, Novarg, Mimail.R and Shimgapi was a computer worm that affected Microsoft Windows (wildammo.com, 2010). MyDoom in 2004 had set the record for spreading the fastest through email. It was said to be started by e-mail spammers through junk mail being sent. That was one way the worm was sent. MyDoom was also sent out as failure sent messages. One of the messages that MyDoom had sent out was “Andy; I’m just doing my job, nothing personal, sorry.” (wildammo.com, 2010). With messages such as that and sent failure / system error messages, one whom was not knowledgeable of such worms would foolishly open it. These messages including but not limited to the one mentioned above brought suspicion to a lot of people and it was believed that the maker of the worm was paid. To date, the author of MyDoom is not known. It is thought though that MyDoom was created in Russia by a programmer (wildammo.com, 2010). In the result of MyDoom globally internet access had slowed down...
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...The person might have a computer virus infection when the computer starts acting differently. For instance getting slow or when they turn the computer on, it says that all the data is erased or when they start writing a document, it looks different, some chapters might be missing or something else ubnormal has happened. The next thing usually the person whose computer might be infected with virus, panics. The person might think that all the work that have been done is missing. That could be true, but in most cases viruses have not done any harm jet, but when one start doing something and are not sure what you do, that might be harmful. When some people try to get rid of viruses they delete files or they might even format the whole hard disk like my cousin did. That is not the best way to act when the person think that he has a virus infection. What people do when they get sick? They go to see a doctor if they do not know what is wrong with them. It is the same way with viruses, if the person does not know what to do they call someone who knows more about viruses and they get professional help. If the person read email at their PC or if they use diskettes to transfer files between the computer at work and the computer at home, or if they just transfer files between the two computers they have a good possibility to get a virus. They might get viruses also when they download files from any internet site. There was a time when people were able to be sure that some sites...
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...Essay 1 What Is There to Worry About? An Introduction to the Computer Security Problem Donald L. Brinkley and Roger R. Schell This essay provides an overview of the vulnerabilities and threats to information security in computer systems. It begins with a historical presentation of past experiences with vulnerabilities in communication security along with present and future computer security experiences. The historical perspective demonstrates that misplaced confidence in the security of a system is worse than having no confidence at all in its security. Next, the essay describes four broad areas of computer misuse: (1) theft of computational resources, (2) disruption of computational services, (3) unauthorized disclosure of information in a computer, and (4) unauthorized modification of information in a computer. Classes of techniques whereby computer misuse results in the unauthorized disclosure and modification of information are then described and examples are provided. These classes are (1) human error, (2) user abuse of authority, (3) direct probing, (4) probing with malicious software, (5) direct penetration, and (6) subversion of security mechanism. The roles of Trojan horses, viruses, worms, bombs, and other kinds of malicious software are described and examples provided. In the past few decades, we have seen the implementation of myriads of computer systems of all sizes and their interconnection over computer networks. These systems handle and are required to protect...
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...Chapter 1 - Introduction to Computers - Key Terms (pages 1-15) Barcode - (p. 7, 294) used to index documents scanned within a document management systems. Bit - (p. 294) the level of voltage (low or high) in a computer that provides the binary states of 0 and 1 that computers use to represent characters. Bluetooth port - (p. 294) technology that uses radio waves to provide hands-free cellular phone communications. Blu-Ray disc - (p. 294) storage device, similar to CDs and DVDs, but are able to store even larger amounts of data. Bus network - (p. 294) computers networked together that are lined up on a single cable. Byte - (p. 294) eight bits treated as a single unit by a computer to represent a character. Cache memory - (p. 294) a type of memory located on the central processing unit (CPU) that can also be on a part of the processor. Central processing unit (CPU) - (p. 295) the brain of the computer, or the circuits that make the electrical parts function. Client/server network - (p. 295) large networks that could run hundreds of computers in various counties or states. Compact disc (CD) - (p. 296) discs that use a finely focused laser beam to write and read data. Computers on wheels (COWs) - (p. 296) term used to refer to notebook computers mounted on carts and moved with the user. Daisy chain network - (p. 296) the easiest way to add more computers into a network by connecting each computer to the next in a series. Device driver - (p. 297) a specific type of...
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...Best Device for Your Needs Introduction to Computer and Network Hardware: ITCO103 - 1401A – 01 IP 1 Best Device for Your Needs Many people are updating their smartphones, laptops and desktops. There are so many options to choose from brand, size and performance. This paper will discuss and compare some of today’s best bargain laptops and computers that will also offer some of today’s most updated software and features. I will also discuss two of the most popular smartphones comparing and contrasting each devices features. While shopping on the internet for the best computer system I had hundreds of choices. I decided to narrow my choices down by picking a device that had all the features I needed in a computer system, but had a reasonable price tag for a full time worker and a part time student budget. The best option for me is the Dell Inspiron 660, and the Canon PIXMA MG2220 all-n-one printer it has all the features and needs that I would need in a personal home desktop system. The price point for this desktop is around $529.00. This device can be purchased at Wal-Mart, Best Buy, and Hhgreeg making it accessible to most for in store purchase. This desktop is also available for purchase online as well from the dell website directly for the price listed above. The system software consists of OS Provided Microsoft Windows 7 Home Premium 64-bit Edition. The system setup specs...
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...In the world of technology and computers, there has always been a way to make programs applications more advanced more simplistic and better than ever before with updates. When everything also is made into the way of life of computers, there’s always one thing to provide out the details and the simplistic trails of operating systems. Without the limitations of these operating systems, many would wonder as a society what could have happened if the operating system was never invented. Without operating systems and computers, things could and would have proceeded into the complications of today and things might not have changed if it wasn’t for the internet and different frustrations of doing many things by hand, but in the ways of introducing technology now is very simplistic. Using computers now in the present have been used as a daily important part of our lives to stay communicated to the world and to the rest of the others in real time. Running on computers have been of choice running operating systems to stay on top of programs and applications to get and take care of the other particles of tasks needed to be done or just for leisure and entertainment. Using operating systems known in short terms for “OS” is all on the society’s choice running what they think is the best for what they can get for the computer. There is all but one OS out of the major ones that is running for free without price, and that would be Linux. In today’s society, there’s a lot that Linux can do...
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...Introduction to Computers and the Internet 2 1) Basic browser buttons: The same picture is blown up twice below, so that the labels are easier to read. 2) Favorites: A favorite (or a bookmark, depending on your browser) is a link to a page that you store in your web browser. This makes it easier to pull up that page because you do not have to remember its full address, search for it, or click through links on a page to get to it. If there is a page you want to remember or like to go to a lot, you may want to add it to your favorites. Here you can see the pages that are currently saved on your computer or add a new one. 3) Home Page(s): The home page is the page or pages that the browser pulls up when you first open it. You can set it to open more than one, and you can choose what it opens first. To do this, you will want to use the “home” icon. [pic] Clicking on the icon will make the browser pull up the home page, but by clicking on the arrow immediately to the left of it, you can set a new home page. Here you can see the current home page highlighted and the options to change or remove home pages. If you choose to add or change, you will see this: You can either make the page you are currently on the home page, or tell the browser to bring it up in addition to the page(s) it is already opening. If you find that you have too many home pages, you may want to remove some, like this: 4)...
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...Introduction to personal computers Homework January 9, 2015 Chapter 1, review questions 1-15 Chapter 2, review questions 1-15 Chapter 3, review questions 1-17 Presented by: Bolivar Antonio Taveras Chapter 1 review questions 1-15 Which of the following is an example of a PC? Colossus ENIAC 8088 Von Neumann Who is credited with the patent for the first computer? Eckert and Mauchly Atanasoff Microsoft Intel In the Von Neumann architecture, what two components make up the CPU? (select the two best answers) Control unit Processor Arithmetic unit Memory What technology alleviates the problem of the “Von Neumann bottleneck”? Cache Main memory CPU Hard disk drive Which of the following are groups within the Von Neumann architecture? Working storage Monitor Output devices Permanent storage Keyboard What are the three main connections in a transistor? (select the three best answers) Gate N-type silicon Source Drain Conductor MOSFET is the most common type of what electronic component? Vacuum tube CPU Integrated circuit Transistor Approximately how many transistors are incorporated into today’s Intel processors? Hundreds Thousands Millions Billions What made the 8088 Intel CPU special compared to its predecessors? 1MB address limit 33 MHz processor 64KB address limit 1MHz processor What does Moore’s law state? Whatever can go wrong with computers will. ...
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...GRAPHICS Road safety Everyday many people are involved in road accidents. Some are killed. Many more are injured or maimed. So it is important for us to learn to use the roads properly and safely. No sane person would like to be involved in an accident. As the roads are very busy nowadays, we should be very careful when crossing one. It is safer to use a pedestrian crossing or an overhead bridge whenever one is available. Never cross a road by dashing across it. That is inviting trouble. If there are no crossings, then we must look carefully right and left and cross only when it is safe to do so. Some of us take the bus to school. It is important that we do not try to get on or off a bus while it is still moving. I tried to get on a moving bus once. It dragged me a short distance and nearly ran over me. I was lucky to escape with only some scratches on my legs. Also we must not fool around while in the bus. A suddenly lurch can send us knocking our heads against something hard. Using a bicycle can be dangerous too. We must pay attention on the road and never cycle too far out to the middle of the road. We must obey all traffic rules. Also we must make sure our bicycles are in good condition with working brakes, lights etc. These are some things we can do to avoid accidents. However there is no guarantee that we will never be involved in one. The important thing is to stay alert at all times while using the roads. We must know what is happening around us. In that way we can...
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...1) A computer is unique compared to any other machine because of its ability to ________. process large amounts of information simultaneously process complex math functions change its programming use many different types of software Score: 1 2) Bits are used to measure ________. storage capacity data transfer and Internet connection rates the size of files the amount of time a user is connected to the Internet Score: 1 3) The smallest, most lightweight, and inexpensive computer is the ________. notebook laptop netbook client Score: 0 4) Distributed computing distributes ________. the processing of tasks across a group of computers power ability across all users Internet usage across the entire network disk storage for all computer users Score: 1 5) Smartphones use ________ technology, allowing users to perform several functions with one device. embedded design invisible computing convergence grid computing Score: 1 6) The intersection of a row and a column in a spreadsheet is called a ________. field text cell record Score: 1 7) Shaynia has been working with her colleagues on a Word...
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