Getting started with computers & the internet
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Transcript of Getting started with computers & the internet
SSA MINI CONFERENCE JUNE 5, 2013
Getting Started with Computers and the Internet
Martha [email protected]
COMPUTER BASICSWhat is a computer?
• An electronic device that receives data, processes data, stores data, and produces a result (output)
• A collection of electronic circuits, which can be on or off (open or closed)
Components of Computer Systems
• Hardware– Tangible, physical equipment like the
case, the monitor, the keyboard, mouse, speakers, etc.
• Software– Intangible set of instructions that tell the
computer what to do– Called applications, like PowerPoint, Word,
etc.
Types of Computers
• Supercomputers– Used to do things like predict hurricanes
and navigate satellites• Mainframe computers
– Used by business and government to process large amounts of information
• Personal computers– smaller and less powerful than the other
types of computers– Desktops– Laptop– Notebook or tablet
Input, Output & Storage Devices
• Input devices allow you to communicate with your computer
• Output devices allow your computer to communicate with you
• Storage devices allow you to store or retrieve information on your computer
Input Devices
• Keyboard• Mouse• Touchpad• Touch screen• Bar code reader• Scanner• Microphone• Digital camera
Output Devices
• Monitor• Printer• Speakers• Modem
– Allows your computer to communicate with other computers
Storage Devices
• Hard Drive– Inside the CPU– Can be external
• CD (Compact Disk)• DVD (Digital Versatile Disk)• Flash drive (USB drive)
• Main Home Screen on a Computer Called the Desktop
Networks
• When computers are connected to other computers
• They can share information and sometimes hardware (printers)
• Two Types: Local-Area and Wide-Area
Local Area Networks (LAN)
• Computers are connected together in a relatively close location such as in the same building or department.
• The data and software for these computers are stored on a central computer called the file server.
• Most schools use these so that employees can have access to frequently used files.
Wide Area Networks (WAN)
• When local area networks are expanded to include several local area networks within a city, state, region, territory, country, continent, or the world.
• This is what the Internet is—a worldwide network of computer networks.
What Can You Do on the Internet?• Search for and view information• Download information from remote
computers to your computer • Send e-mail• Join social networks, electronic
discussion groups, blogs, or newsgroups
• Use social networks to interact with people
• Interact with blogs, news sources, etc.
• Make Web pages• Make content: videos, songs, images,
multimedia—and share the content with others
Facts About the Internet
• No one owns or manages it• Anyone can publish a page• It can be used to communicate with
people in the world and find information
• Information can be inaccurate or out of date
• Not everything can be found on the Internet
What Is the World Wide Web?
• A global hypertext information system that uses the Internet– Like a big book of pages, but the pages
are on different computers all over the world
– Hypertext links on each page connect to other pages
How Does the WWW Work?• All web pages are
written in the same language: HTML (Hypertext Markup Language)
• Every page has its own Web address (URL—Uniform Resource Locator)
• Hypertext links one web page to another
• A browser (Internet Explorer, Firefox, or Chrome) gives users point and click access
Web Page Addresses (URLs) http://www.healthaction.org/healthyheart/index.html
hypertext domain pathway filenametransfer protocol
Domain names:• .com (commercial)• .gov (government)• .org (non-profit organization)• .edu (educational institution)• .mil (military)• .net (network)• Other countries: .ca (Canada), .au (Australia), etc.
Web Browsers
• Internet Explorer– Microsoft product
• Mozilla Firefox– Open Source
• Google Chrome– Google product
Navigating the Browser• Use the back button to navigate to
pages you have come from• Enter Internet addresses (URLs)
accurately to take you to the website you want
Internet Searching
• Search Engines– Spiders or robots continually search the
Web for new pages, indexing words on each page and noting changes
– No search tool searches everything on the web, so to really find it all, you should use multiple engines
– Sites are chosen by keywords that can appear anywhere on the page
– Search using only the most important words
Different Search Engines
• Google• Bing• Ask• Yahoo!• Dogpile
Understanding Search Engine Results
Getting the Most Out of Search Tools• Use advanced search to narrow your
results
Files & Folders—Organizing on the Computer• A file is like a document that you
might find on someone's desk or in a filing cabinet– an item that contains a collection of
related information– examples of files include text documents,
spreadsheets, digital pictures, and songs• A folder is a container of files
– You can store lots of files inside folders– You can even store folders inside of other
folders
My Documents
• A default location on your computer where it stores files is called My Documents
• This is a folder that has already been created for you
• If you don’t “tell” the computer to do otherwise, it will save your:– Music files to the My Music folder– Picture files to the My Pictures folder– Videos to the My Videos folder
PRACTICE: Creating a New Folder• Right mouse click on any empty
space on your desktop to get this pop up menu:
• Click the New option to get the side bar menu pictured:
• Click the Folder option
• A new yellow folder will appear on your desktop. Type your name in place of the words, “New folder.”
• Double click the folder with your name on it to open it.
PRACTICE: Creating & Saving a File
• Open Microsoft Word on your computer
• Type a sentence• Go up to the menu bar and click on
rainbow ball• Move down the list and click on
“Save as”• Navigate to the folder you created
with your name on it by clicking the Desktop icon, then click on your folder
• Give your file a name and click Save
• Open Word by Clicking on the Icon
Type a sentence here.
Click on Save As
• Click on Desktop, then your folder; type in file name, then click on Save
CREDITS• This PowerPoint is based on
ones created by Shannon Crawford Barniskis, 2010, Connie Hutchison and Christopher McCoy