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Chapter 4: File Management, Virus Protection, and Backup. Chapter 1: Computer, Internet, Web, and E-Mail Basics. 1. 1. 1. 1. Chapter 1 Preview. After this chapter, you should be able to: Define the term computer and identify the components of a personal computer system

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slide1
Chapter 1: Computer, Internet, Web, and E-Mail Basics

Chapter 4: File Management, Virus Protection, and Backup

Chapter 1: Computer, Internet, Web, and E-Mail Basics

1

1

1

1

chapter 1 preview
Chapter 1 Preview

After this chapter, you should be able to:

  • Define the term computer and identify the components of a personal computer system
  • Compare the computing capabilities of the computer categories
  • Describe operating systems
  • Evaluate the various ways you can connect a computer to the Internet and select an ISP

Chapter 1: Computer, Internet, Web, and E-Mail Basics

chapter 1 preview3
Chapter 1 Preview

After this chapter, you should be able to:

  • Describe how Web servers, browsers, URLs, HTML, and HTTP contribute to the Internet resource known as the Web
  • Describe Internet communications and basic features
  • Demonstrate that you can use a search engine to locate information on the Web
  • Explain how an e-mail system works

Chapter 1: Computer, Internet, Web, and E-Mail Basics

chapter 1 outline
Chapter 1 Outline
  • Section A
    • Computer Basics
  • Section B
    • Internet Basics
  • Section C
    • Web Basics
  • Section D
    • E-Mail Basics

Chapter 1: Computer, Internet, Web, and E-Mail Basics

section a computer basics

Chapter 1Computer, Internet, Web, and E-Mail Basics

Section A: Computer Basics

Computer Concepts 8th EditionParsons/Oja

what is a computer
What is a computer?
  • A computer system includes a computer, peripheral devices, and software
  • Accepts input, processes data, stores data, and produces output
    • Inputrefers to whatever is sent to a computer system

Page 4

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics
Computer Basics

What is a computer?

  • Data refers to the symbols that represent facts, objects, and ideas
  • Processing is the way that a computer manipulates data
  • A computer processes data in a device called the central processing unit (CPU)

Page 4

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a computer8
What is a computer?
  • A computer stores data so that it will be available for processing
  • Memory is an area of a computer that holds data that is waiting to be processed, stored, or output
  • Storage is the area where data can be left on a permanent basis

Page 5

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer basics9
Computer Basics

What is a computer?

  • Computer output is the result produced by the computer
  • An output device displays, prints or transmits the results of processing

Page 5

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a computer10
What is a computer?

Page 5

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer categories
Computer Categories
  • Before:
    • Categorized into three main categories:
      • microcomputers
      • minicomputers
      • mainframe computers
  • Today:
    • Categorized based on its technology, function, size, performance, and cost

Page 6

Chapter 1: Computer, Internet, Web, and E-Mail Basics

computer categories12
Computer Categories
  • Today’s Computer Categories
    • Personal computers
    • Handheld computers
    • Workstations
    • Videogame Consoles
    • Mainframes
    • Supercomputers
    • Servers

Page 6

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a personal computer
What is a Personal Computer?
  • Microcomputer designed to meet the computing needs of an individual
    • Desktop computers
    • Notebook computers
    • Cost starts at $500, but most spend $1000 to $1200

Page 6

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a tablet computer
What is a tablet computer?
  • Portable computing device featuring a touch-sensitive screen
  • Prices range from $1,200 to over $2,000

Page 7

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a handheld
What is a handheld?
  • Designed to be used while you are holding it
  • Also called a PDA (Personal Digital Assistant)
    • Send and receive e-mail
    • Use maps and global positioning
    • Maintain expense account, contacts, to-do lists, memos, etc.
    • Make voice calls using cellular service

Page 7

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a handheld16
What is a handheld?

Page 7

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what types of computers can be classified as workstations
What types of computers can be classified as workstations?
  • The term “workstation” has two meanings
    • Powerful desktop models
    • Ordinary personal computers
    • A computer network is two or more computers or other devices that are connected

Page 8

Chapter 1: Computer, Internet, Web, and E-Mail Basics

is a playstation a computer
Is a PlayStation a computer?
  • Yes, but typically it has not been considered a computer category
  • Today’s videogame systems contain microprocessors

Page 8

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what s so special about a mainframe computer
What’s so special about a mainframe computer?
  • Large and expensive computer
  • Capable of passing data simultaneously for hundreds of thousands of users
  • Used by governments and large corporations

Page 8

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how powerful is a supercomputer
How powerful is a supercomputer?
  • One of the fastest computers in the world
    • Breaking codes
    • Modeling weather systems
    • Simulating nuclear explosions

Page 8

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what makes a computer a server
What makes a computer a server?
  • A server serves the computers on a network by supplying them with data
  • A client requests data from a server
  • Any computer can be a server or a client

Page 9

Chapter 1: Computer, Internet, Web, and E-Mail Basics

personal computer systems
Personal Computer Systems

Page 9

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what s a personal computer system
What’s a personal computer system?
  • A personal computer system consists of the following:
    • System unit
    • Display device
    • Keyboard
    • Mouse
    • Harddisk drive
    • CD and DVD drives

Page 10

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what s a personal computer system24
What’s a personal computer system?
  • Floppy disk drive
  • Sound card and speakers
  • Modem and network cards
  • Printer

Page 10

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a personal computer system
What is a personal computer system?

Page 10

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a peripheral device
What is a peripheral device?
  • Equipment that might be added to a computer system to enhance its functionality
    • Printer
    • Digital camera
    • Scanner
    • Joystick
    • Graphics tablet

Page 11

Chapter 1: Computer, Internet, Web, and E-Mail Basics

data information and files
Data, Information, and Files
  • Data - symbols that represent people, events, things and ideas
  • Information - data that is presented in a format people can understand and use
  • Computers store data in digital format as a series of 1s and 0s.
    • Each 1 or 0 is called a bit
    • Eight bits is called a byte

Page 11

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a file
What is a file?
  • A named collection of data that exists on a storage medium
  • A data file contains data such as the text for a document
  • An executable file contains the programs or instructions that tell a computer how to perform a specific task
  • A filename extension indicates a file’s contents
    • EXE
    • GIF

Page 11

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is application software
What is application software?
  • A set of computer programs that helps a person carry out a task
    • Create, edit, and print documents
    • Manage money accounts
    • Create and edit home movies

Page 12

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what are the most popular operating systems
What are the most popular operating systems?
  • Microsoft Windows
    • Windows XP
    • Windows Mobile
  • Palm OS
  • Mac OS
  • Linux
  • Unix

Page 12

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how does an operating system affect compatibility
How does an operating system affect compatibility?
  • Two of the factors that influence compatibility and define a computer’s platform are the microprocessor and the operating system
    • PCs are based on the design of the IBM PC
    • Macs are based on a proprietary design for a personal computer called the Macintosh

Page 13

Chapter 1: Computer, Internet, Web, and E-Mail Basics

section b internet basics

Chapter 1Computer, Internet, Web, and E-Mail Basics

Section B: Internet Basics

Computer Concepts 8th EditionParsons/Oja

how does the internet work
How does the Internet work?
  • The Internet is a collection of networks that are linked together to exchange data and distribute processing tasks
  • The main routes are referred to as the Internet backbone
  • Communication between all of the different devices on the Internet is made possible by TCP/IP

Page 15

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what kind of resources are available on the internet
What kind of resources are available on the Internet?
  • Web Sites – various locations in cyberspace that correspond to a corporation, a store, a magazine, and more
  • Search engines – help catalog a huge portion of the data stored on Web sites
  • Downloads and uploads
  • P2P – peer-to-peer
    • Popular music and file exchange Web sites

Page 16

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what kind of resources are available on the internet35
What kind of resources are available on the Internet?
  • E-mail– electronic messages
    • Mailing list server
  • Bulletin boards – discussion groups
    • Usenet
    • Newsgroups
  • Blogs – refers to a personal journal posted on the Web

Page 17

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what kind of resources are available on the internet36
What kind of resources are available on the Internet?
  • Chat groups and instant messaging – interaction between users in real time
  • Internet telephony – telephone-style conversations to travel over the Internet
  • E-commerce – online activities such as banking and shopping

Page 17

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what kind of resources are available on the internet37
What kind of resources are available on the Internet?
  • Broadcasting – multicasting technology
  • Remote access and control –link two computers together and allow one to control the other
    • Telnet
    • SSH

Page 17

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what are my options for internet connections
What are my options for Internet connections?
  • Existing telephone line
  • Cable television line
  • Personal satellite link
  • Wireless or cell phone service
  • High-speed telephone services
    • ISDN, DSL

Page 18

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what are my options for internet connections39
What are my options for Internet connections?

Page 18

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what s the easiest cheapest way to access the internet
What’s the easiest, cheapest way to access the Internet?
  • Dial-up connection – relatively simple and inexpensive
  • Voiceband modem – converts digital signals into wave format to go over telephone lines and then at destination waves are converted back into digital
  • Dial-up top speed is 56 Kbps

Page 18

Chapter 1: Computer, Internet, Web, and E-Mail Basics

does a cable modem provide a faster internet connection
Does a cable modem provide a faster Internet connection?
  • Requires 2 pieces of equipment
    • Network card – connects a personal computer to a local area network
    • Cable modem –changes computer’s signals into a form that can travel over cable TV links

Page 19

Chapter 1: Computer, Internet, Web, and E-Mail Basics

does a cable modem provide a faster internet connection42
Does a cable modem provide a faster Internet connection?
  • Referred to as an always-on connection
  • Top speed is around 1.5 Mbps (25 times faster than dial-up)
  • Suitable for most Internet activities, including real-time video and teleconferencing

Page 19

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what about access provided by a school or business network
What about access provided by a school or business network?
  • Typically schools and business connect to a local area network that is connected to the Internet
  • These connections are frequently always-on connections

Page 20

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what other high speed internet access options are available
What other high-speed Internet access options are available?
  • ISDN (Integrated Services Digital Network) – 64Kbps or 128 Kbps
  • DSL (Digital Subscriber Line) – anywhere from twice as fast to approx. 125 times faster than 56 Kbps
    • Comes from phone company, requires proximity to a switching station
  • DSS (Digital Satellite Service) – 500 Kbps

Page 20

Chapter 1: Computer, Internet, Web, and E-Mail Basics

internet service providers what s an isp
Internet Service ProvidersWhat’s an ISP?
  • A company that provides Internet access to businesses, organizations, and individuals
    • An ISP that offers dial-up connections, for example, maintains a bank of modems
    • AOL, Earthlink

Page 20

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how do i choose an isp
How do I choose an ISP?
  • Geographical coverage
  • Type of service
  • Quality of service
  • Cost of monthly service
  • Cost of equipment and installation
  • Extra services
  • Customer service

Page 21

Chapter 1: Computer, Internet, Web, and E-Mail Basics

user id s and passwords
User ID’s and Passwords
  • A user ID becomes a person’s unique identifier
  • A password is a different series of characters that verifies your identity
  • Some computers are case-sensitive; they differentiate between upper and lower case letters

Page 22

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how do i choose a secure password
How do I choose a secure password?

Page 23

Chapter 1: Computer, Internet, Web, and E-Mail Basics

section c web basics

Chapter 1Computer, Internet, Web, and E-Mail Basics

Section C: Web Basics

Computer Concepts 8th EditionParsons/Oja

the world wide web
The World Wide Web
  • The Web is a collection of files that can be linked and accessed using HTTP
  • HTTP (Hypertext Transfer Protocol) - the protocol that allows Web browsers to communicate with Web servers
  • Many of these files produce documents called Web pages
  • Web site- location on a computer somewhere on the Internet that stores a collection of Web pages
    • http://www.yahoo.com

Page 26

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is the web
What is the Web?

Page 26

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is the web52
What is the Web?
  • Webserver - computer with special software for transmitting Web pages over the Internet
  • Homepage - identifies the site and contains links to other pages at the site
  • Web sites are composed of a series of Webpages

Page 27

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is the web53
What is the Web?
  • URL (Uniform Resource Locator) - an Internet address of a document on a computer
    • Begins with http://

Page 27

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a browser
What is a browser?
  • Web browsersare software programs that run on your computer and help you access Web pages
    • Internet Explorer
    • Netscape

Page 28

Chapter 1: Computer, Internet, Web, and E-Mail Basics

exactly what does a browser do
Exactly what does a browser do?
  • Fetches and displays Web pages
  • The server sends your computer data that’s stored
  • The data consists of information that you want to see and HTML tags, codes that tell your browser how to display it

Page 30

Chapter 1: Computer, Internet, Web, and E-Mail Basics

exactly what does a browser do56
Exactly what does a browser do?

Page 30

Chapter 1: Computer, Internet, Web, and E-Mail Basics

can i copy and save information from a web page
Can I copy and save information from a Web page?

Pages 30-31

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is a search engine
What is a search engine?
  • Web site that provides a variety of tools to help you find information
    • Helps you locate web pages on certain topics
    • Enter keywords or descriptions
    • AltaVista, Google, Yahoo, etc.

Page 31

Chapter 1: Computer, Internet, Web, and E-Mail Basics

search engines
Search Engines

Page 31

Chapter 1: Computer, Internet, Web, and E-Mail Basics

exactly what is a query
Exactly what is a query?
  • Describes information you want to find
  • You can enter more than one keyword
  • A search operatordescribes a relationship between keywords
    • AND, OR, and NOT
    • Quotation marks
    • NEAR
    • Wildcards
    • Field Searches

Page 32

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how do i use a topic directory
How do I use a topic directory?
  • A topic directory is a list of topics and subtopics

Page 33

Chapter 1: Computer, Internet, Web, and E-Mail Basics

section d e mail basics

Chapter 1Computer, Internet, Web, and E-Mail Basics

Section D: E-Mail Basics

Computer Concepts 8th EditionParsons/Oja

who can use e mail
Who can use e-mail?
  • Any person with an e-mail account
  • An e-mailaccount provides the rights to a storage area or “mailbox”
  • Each mailbox has a unique address

Page 36

Chapter 1: Computer, Internet, Web, and E-Mail Basics

exactly what is an e mail message
Exactly what is an e-mail message?
  • A document that is composed on a computer and remains in digital form so that it can be transmitted to another computer
  • Every message includes:
    • A message header
    • The body of the message

Page 36

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what can i do with basic e mail
What can I do withbasic e-mail?

Page 36

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how does forwarding work
How does forwarding work?
  • After you receive a message, you can pass it on to other people
  • The original message is copied and then you can enter the address of the person to receive the message, and even add a note about why you are passing it along

Page 37

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what s an e mail attachment
What’s an e-mail attachment?
  • File that travels with a message to the recipient
  • MIME provides a way of disguising the file as plain ASCII text that can travel over the Internet

Page 37

Chapter 1: Computer, Internet, Web, and E-Mail Basics

is e mail different than other types of communication

Put a meaningful title on the subject line

Use uppercase and lowercase letters

Check spelling

Be careful what you send

Be polite

Be concise

Be cautious with sarcasm and humor

Use smileys cautiously : - )

Use the Bcc function for group mailings

Don’t send replies to “all recipients”

Don’t send huge attachments

Explain all attachments

Stay alert for viruses

Notify recipients of viruses

Is e-mail different than other types of communication?
  • Netiquette is online jargon for “Internet etiquette
  • Series of customs or guidelines for maintaining civilized and effective communications on-line

Pages 38-39

Chapter 1: Computer, Internet, Web, and E-Mail Basics

what is all this junk in my mailbox
What is all this junk in my mailbox?
  • Spam is unwanted electronic junk mail that arrives in your online mailbox
  • Globally, spam accounts for about 75% of all e-mail messages

Page 40

Chapter 1: Computer, Internet, Web, and E-Mail Basics

e mail technology what is an e mail system
E-mail Technology: What is an e-mail system?
  • The equipment and software that carries and manipulates e-mail messages
  • E-mail servers sort, store, and route email
  • Store-and-forward technology – a communications method in which data that cannot be sent directly to its destination will be temporarily stored until transmission is possible
    • POP
    • IMAP
    • Web-based e-mail

Page 40

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how do i use web based e mail
How do I use Web-based e-mail?

Page 41

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how do pop and imap work
How do POP and IMAP work?
  • Your ISP will offer POP or IMAP
  • POP server– a computer that stores your incoming messages until they can be transferred to your hard disk
  • Using POP requires e-mail client software
  • Outgoing mail is routed by an SMTP server

Page 41

Chapter 1: Computer, Internet, Web, and E-Mail Basics

how do pop and smtp work
How do POP and SMTP work?

Page 41

Chapter 1: Computer, Internet, Web, and E-Mail Basics

is pop mail better than web based e mail
Is POP mail better than Web-based e-mail?
  • Requires e-mail client software
  • Transfers e-mail to your computer
  • Consider the following when deciding:
    • Control
    • Security
    • Travel

Page 42

Chapter 1: Computer, Internet, Web, and E-Mail Basics

conclusion
Conclusion
  • You should now be able to:
    • Define the term computer and identify the components of a personal computer system
    • Compare the computing capabilities of the computer categories
    • Describe operating systems
    • Describe Internet communications and basic features
    • Explain how an e-mail system works

Chapter 1: Computer, Internet, Web, and E-Mail Basics

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