computer, internet, web, and email.ppt

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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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

E-mail

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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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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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
http://google.com/http://google.com/


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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

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