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7/27/2019 Computer, Internet, Web, and Email.ppt
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Computer, Internet, Web, and
E-Mail Basics
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Chapter Contents
Section A: Computer Basics
Section B: Internet Basics
Section C: Web Basics Section D: E-Mail Basics
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Section A: Computer Basics
A Computer Is
Computer Categories
Personal Computer Systems Data, Information, and Files
Application Software and Operating
System Basics
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A Computer Is
Device that accepts input, processes data,
stores data, and produces output
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A Computer Is
A stored program means that a series of
instructions for a computing task can be
loaded into a computers memory
Allows you to switch between tasks
Distinguishes a computer from other simpler
devices
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Computer Categories
Computers are categorized
based on criteria such as
usage, cost, size, and
capability
Microcomputer
Personal computer
Desktop computer
Notebook computer
Tablet computer
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Computer Categories
Handheld computer
PDA
Workstation
Computer network
LAN
Videogame console
Nintendos GameCube Sonys PlayStation
Microsofts Xbox
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Computer Categories
Mainframe computer
Processes data for hundreds of thousands of users
Supercomputer
One of the fastest computers in the world
Server
Supplies client computers with data
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Personal Computer Systems
A computer system refers to a computer
and all the input, output, and storage
devices that are connected to it
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Personal Computer Systems
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Personal Computer Systems
Peripheral devices enhance the
functionality of a computer
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Data, Information, and Files
Data becomes information when it is
presented in a format that people can
understand and use
Digital format
A file is a named collection of data that
exists on a storage medium
Data and executable files
File names and file extensions
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Application Software
and Operating System Basics
Application software
Set of computer
programs that helps a
person carry out a task System software
Helps the computer
system monitor itself
and function efficiently Operating systems
Microsoft Windows
Mac OS
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Application Software
and Operating System Basics
Two of the most popular personal
computer platforms are PCs and Macs
PCs
Based on the design for the IBM PC
Macs
Based on a proprietary design for the
Macintosh
PC and Mac platforms are not compatible
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Section B: Internet Basics
Internet Resources
Internet Connections
Internet Service Providers User IDs and Passwords
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Internet Resources
The Internet is a collection of linked
computer networks
Main communication routes referred to as
the Internet backbone
TCP/IP
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Internet Resources
Web sites
Search engines
Downloads anduploads
P2P file sharing
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Internet Resources
Bulletin boards
Usenet
Blogs
Chat groups and
instant messaging
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Internet Resources
Internet telephony
E-commerce
Broadcasting Remote access and control
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Internet Connections
Dial-up connection
Simple and
inexpensive
Signals travel overphone lines
Voiceband modem
Cable Internet service
Computer signalstravel over cable TV
lines
Cable modem
Always-on connection
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Internet Connections
ISDN (Integrated Services Digital Network)
Speeds are marginally better than dial-up
DSL (Digital Subscriber Line)
Up to 125 times faster than dial-up
DSS (Digital Satellite Service)
Average seed is 500 Kbps
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Internet Service Providers
Maintains equipment to provide Internet
access to subscribers
Where to locate a list of ISPs
Yellow Pages
www.thelist.com
Your computer may
contain a directory
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Internet Service Providers
How to choose an ISP:
Geographical coverage
Type of service
Quality of service
Cost of monthly service
Cost of equipment and installation
Extra services
Customer service
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User IDs and Passwords
Designed to provide access for authorized
users
A user ID serves as a persons unique
identifier
A password verifies your identity
Case sensitive
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User IDs and Passwords
Choosing a secure password
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Section C: Web Basics
The World Wide Web
Browsers
Search Engines
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The World Wide Web
Collection of files that can be linked and
accessed using HTTP
The World Wide Web consists of:
Web pages
Links
Web sites
Web servers
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The World Wide Web
Every Web page has a unique address, or
URL
HTML is the standard format for Web
documents
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Browsers
Web browsers help you access Web
pages
Microsoft Internet Explorer
Netscape Navigator
Mozilla Firefox
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Browsers
Common browser features
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Browsers
Browsers fetch
and display Web
pages
HTML tags tell
the browser how
to display
information on theWeb page
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Browsers
To copy a passage of text
from a Web page,
highlight the text, click
the Edit menu, thenselect Copy. Next, switch
to your own document
and use the Paste option.
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Search Engines
Web site that helps you find information
Different search engines return different
results
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Search Engines
A query describes the information you
want to find
Keywords describe the information youre
trying to find
Search operators describe the relationship
between keywords
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Search Engines
A topic directory is
a list of topics and
subtopics
Arranged in a
hierarchy
CLICK TO START
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Search Engines
Search forms help you enter complex
queries
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Search Engines
Some search engines accept natural
language queries
Where can I find a review of The Producers?
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Section D: E-Mail Basics
E-mail Overview
Netiquette
Spam E-mail Technology
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E-Mail Overview
Any person with an e-mail account can
send and receive e-mail messages
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E-Mail Overview
Basic e-mail activities
Writing
Reading
Replying
Forwarding
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E-Mail Overview
E-mail attachments are files that travel
with an e-mail message
E-mail software converts e-mail attachments
to MIME
HTML-compliant e-mail software
Additional e-mail features
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E-Mail Overview
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Netiquette
Internet etiquette
Meaningful subject
Use uppercase and lowercase letters
Check spelling
Be careful what you send
Be polite
Be cautious with sarcasm and humor
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Netiquette
Use smileys and text
messaging shorthand
cautiously
Use the Bcc function for
group mailings
Dont send replies to all
recipients
Dont send huge
attachments
Explain attachments Stay alert for viruses
Notify recipients of viruses
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Spam
Unwanted electronic junk mail
Dont reply
Dont link
Guard your e-mail address
Use spam filters
Automatically routes advertisements and other
junk mail to appropriate folder Report spam
Change your e-mail address
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E-mail Technology
E-mail systems carry and manipulate e-mail messages
E-mail servers
Based on store-and-forward technology Three types of e-mail systems widely used
today:
POP
IMAP
Web-based e-mail
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E-mail Technology
Web-based e-mail accounts allow you to
use a browser to access your e-mail
messages
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E-mail Technology
A POP server is a
computer that stores
your incoming
messages until theycan be transferred to
your hard disk
E-mail client software
SMTP server