Computer Viruses and their Effects on your PC Table of Contents What is a Virus? .............................................1 HOW A VIRUS INFECTS YOUR SYSTEM: .............................2 HOW DOES A VIRUS SPREAD? .....................................3 BIGGEST MYTH: "I BUY ALL OF MY PROGRAMS ON CD ROM FROM THE STORE". STORE BOUGHT SOFTWARE NEVER CONTAINS VIRUSES.... 3 INFECTION (DAMAGES) ..........................................4 PROTECT YOUR COMPUTER‚ NOW!! .........................
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Linux Commands pwd Print Working Directory (shell builtin) Syntax pwd [-LP] Options -P : The pathname printed will not contain symbolic links. -L : The pathname printed may contain symbolic links The default action is to show the current folder as an absolute path. All components of the path will be actual folder names - none will be symbolic links. ls List information about files. Syntax ls [Options]... [File]... Key Sort entries alphabetically if none of -cftuSUX nor --sort. -a
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constant use every waking minute of every day. The way we use our eyes can determine how well we work throughout our lifetime. Over eighty percent of our learning is mediated through our eyes‚ indicating the important role our vision plays in our daily activities. Vision disturbance is a silent enemy that only appears after a long period of continued stress. Many people in today’s world experience a number of discomforts in relation to spending too much time in front of a computer. These discomforts are
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Remember the good old days when a bulky machine called a PC was something meant only for geeks. The 8086‚ 286‚ 386‚ 486 and the Pentium revolutionized the world of computing‚ but only for a short period of time. Then came in the laptops‚ notebooks or mobile computing which took technology a step ahead. It’s fair to say laptops have come a long way since the early 1990s‚ LCD displays have been replaced with sleek HD screens and the once plus-size machines are now zero sized models. If laptops have
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PC Maintenance As you study this section‚ answer the following questions: Why is dust an enemy to a computer? What will too much‚ or too little‚ humidity do to a computer? When considering HVAC‚ what is the difference between a positive pressure system and a negative pressure system? What causes EMI and what can be done to prevent problems with it? How can a magnet affect a floppy disk or tape? What types of materials can you use to clean internal PC components? When is it important to
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Unix commands 6/27/12 10:24 AM Unix commands Note that there are thousands of commands available on a typical unix box. In bash‚ just hit the "Tab" key twice and say yes‚ to display the the commands currently available on your machine. A standard unix operating system lists currently thousands of commands. Type x to list all commands starting with x. The following list contains some of the more frequently used programs. Access Control exit - terminate a shell (see "man sh" or "man csh")
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Reflections from the One-Percent of Local Police Departments with Mandatory Four-Year Degree Requirements For New Hires: Are They Diamonds in the Rough? Diana Bruns Bacone College ***Contact information Diana Bruns‚ Ph.D. Department Chairperson and Professor‚ Criminal Justice Studies Bacone College 2299 Old Bacone Road Muskogee‚ OK 74403 brunsd@bacone.edu cell: 918-781-7295 office: 918-781-7295 **Diana
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27 Dell Inc. © MarketLine Page 2 Dell Inc. Company Overview COMPANY OVERVIEW *Dell Inc. (Dell or "the company") is one of the leading information technology companies offering a broad range of products‚ including desktop personal computers (PC)‚ servers‚ networking products‚ storage‚ mobility products‚ software and
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Comparing and Contrasting PCs and mainframes Edward Ho POS/355 November‚ 2011 University of Phoenix Comparing and Contrasting PCs and mainframes Summary Before the existence of personal computer or PC‚ there is minicomputer or microcomputer‚ the term “computer” simply referred to mainframes. Mainframes and personal computers have changed drastically over the years but their core functions and systems have stayed the same. The mainframe is used to connect multiple users for
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Identify the letter of the choice that best completes the statement or answers the question. ____ 1. A computer is a device that ____. a. accepts data b. stores data c. produces output d. All of the above ____ 2. ____ is an area of a computer that temporarily holds data that is waiting to be processed‚ stored‚ or output. a. Memory b. Storage c. Input d. Output ____ 3. A computer ____ is two or more computers or other devices that are connected for the purpose of sharing data and programs. a. Panel b
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