ComputerIntro - <?xml version="1.0"...

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<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en-US"> <head> <title>Computer Introduction</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <meta name="copyright" content="Copyright &#169; 2008 by Martin B. Wolske" /> <link rel="stylesheet" type="text/css" media="screen, projection, print" href="http://www.w3.org/Talks/Tools/Slidy/slidy.css" /> <script src="http://www.w3.org/Talks/Tools/Slidy/slidy.js" charset="utf-8" type="text/javascript"></script> <link rel="stylesheet" type="text/css" media="screen, projection, print" href="http://www.w3.org/Talks/Tools/Slidy/w3c-blue2.css" /> </head> <body> <div class="background"> <img id="head-icon" alt="graphic with four colored squares" src="http://www.w3.org/Talks/Tools/Slidy/icon-blue.png" /> </div> <div class="slide cover"> <div style="text- align:center;width:60%;position:relative;left:20%;top:20%"> <h1> An Introduction to Computers<br /> LIS 451 * Summer 2008<br /> Introduction to Networked Information Systems<br /> </h1> <p> <a href="https://apps.lis.uiuc.edu/wiki/display/~mwolske/Martin+Wolske%2C+Ph.D."> Martin Wolske, Ph.D.</a> ( <a href="mailto:mwolske@uiuc.edu">mwolske@uiuc.edu</a>) </p> </div> </div> <div class="slide" id="BasicDefinitions"> <h1>A Few Definitions (from <cite><a href="http://www.webopedia.com/">http://www.webopedia.com/ </a></cite>)</h1> <ul class="incremental"> <li> <dfn>Computer</dfn>: A programmable machine. The two principal characteristics of a computer are: <ul> <li> It responds to a specific set of instructions in a well-defined manner. </li> <li> It can execute a prerecorded list of instructions (a program). </li> </ul> We'll look at the computers during on-campus days 1 and 2. </li> <li> <dfn>Program</dfn>: An organized list of instructions that,
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when executed, causes the computer to behave in a predetermined manner. <ul> <li> <dfn>Operating System</dfn>: The most important program that runs on a computer. Every general-purpose computer must have an operating system to run other programs. Operating systems provide a software platform on top of which other programs, called <dfn>application programs</dfn>, can run. The application programs must be written to run on top of a particular operating system. Your choice of operating system, therefore, determines to a great extent the applications you can run. </li> </ul> We'll look at the operating system and programs more generally during on-campus days 3-4. </li> <li> <dfn>Network</dfn>: A group of two or more computer systems linked together. There are many types of computer networks, including: <ul> <li> <dfn>local-area networks (LANs)</dfn> : The computers are geographically close together (that is, in the same building). </li>
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ComputerIntro - &lt;?xml version=&quot;1.0&quot;...

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