1. Telecommunications Tele – distant; at a distance; over a distance
Communication – a process by which information is exchanged between individuals through a common system of symbols, signs, or behavior
Telecommunications – communicating over a distance

2. Advantages and Uses of Telecommunications
Electronically transfer data
Distance learning
Taking classes online
Teleconferencing
Conducting a meeting with people in different places using a webcam and/or video phone

3. The Internet

4. Background of the Internet
Early origin in the 1960s
Original name: ARPANET
Created so that scientists were able to share information on military and scientific research
The World Wide Web (WWW) began in March 1989 when Tim Berners-Lee wrote a small computer program for his personal computer

5. Web Protocols HTML (Hypertext Markup Language)
A series of tags that are integrated into text documents and describes how the text should be formatted when a Web browser displays it on the screen.
HTTP (Hypertext Transfer Protocol)
Protocol – the standard format for transferring data between 2 devices
Standard that defines how messages are formatted and transmitted.

6. What do you need to connect to the Internet?
Modem
Internet Service Provider (ISP)
Browser

7. What is a browser?
The software program that you use to retrieve documents from the World Wide Web (WWW) and to display them in a readable format
Examples:
Internet Explorer
Netscape Communicator
AOL

8. The Parts of a web page Title bar Menu bar Tool bar Address bar
Go button
Status bar
Access indicator
Scroll bars

9. Title bar
The bar on the top of the window that contains the name of the document.

10. Menu bar A horizontal menu that appears on top of a window.
Provides a selection of options related to the web page.

11. Tool bar
Icons for single-click access to most commonly used menu commands

12. Address bar Contains the URL, or address of the active web page
URL stands for Universal Resource Locator
Also where you type the location for the web page you want to visit

13. Go button Connects you to address displayed in the address bar.
Document window displays the active web page.

14. Status bar Located at the bottom of the browser
Shows the progress of web page transactions

15. Access indicator
When animated, it means your browser is accessing data from a remote computer

16. Scroll bars
Let you scroll vertically and horizontally if the web page is too long or too wide to fit within one screen

17. Automated Features
AutoSearch helps you find a webpage when part of the URL is keyed into the address bar
AutoComplete keeps track of and provides a list of sites you have visited
AutoCorrect is the feature that corrects typos as you type

18. Search Engines

19. What is a search engine?
A tool that lets you find web pages that match a particular word or phrase
Examples:
Altavista
Google
Yahoo
AskJeeves

20. Types of search engines:
Keyword Search
Uses keywords to perform search
Multimedia Search Engines
Used to find graphics, video clips, animation, and MP3 music files.
Meta Search Engines
Search several major search engines at one time.
Subject Directories
Organized by subject categories and displayed in a series of menus.

21. Search tools and techniques:
Phrase Searching
Search Engine Math
Boolean Operators
Wildcard Searching
Title Searching

22. Phrase searching
A phrase is entered using double quotation marks and only matches those that appear adjacent to each other and in the order in which you specify.
Example: “baseball cards”

23. Search Engine Math
Symbols used in formulas to filter out unwanted listings.
Use the plus symbol (+) before words that must appear.
Also known as an inclusion operator.
Use the minus symbol (-) before words that you do not want to appear.
Also known as an exclusion operator.

24. Boolean Operators Boolean logic consists of three logical operators:
AND
NOT OR

25. Wildcard Searching
The * symbol, called an asterisk, is considered a wildcard character.
Used if you don’t know the spelling of a word
Example: N*Ryan to search for Nolan Ryan
Used to search plurals or variations of words.

26. Title Searching Searching the title of a web page.
When a web page author creates a Web page, the Web page generally contains a HTML title.

28. What is E-mail? E-mail = electronic mail Similar to regular mail
2 addresses
A message
Allows for attachments
A carrier
Advantages
Faster way to communicate and respond
Quick and easy way to send messages
Allows you to forward messages to others, and send messages to multiple people
Allows you to attach files (pictures, audio files, images, and documents)

29. E-Mail Terminology Inbox Outbox Sent Items Deleted Items Drafts
New Message
Send
Address Book

30. Parts of an E-mail Address
The username of the person the message is going to
Example: msjarrett
symbol
The user’s domain name
Example: aol.com

31. Types of E-mail addresses:
.edu – educational institution
.com – commercial address
.gov – government address
.org – non-profit organization
.mil – military address
.net – network address

32. Chat Rooms

33. What are chat rooms for?
Using the computer to create real-time communication between yourself and another user or a group of users.
Internet Relay Chat (IRC)
A text-based chat developed by Jarkko Oikarinen in 1988.
One of the most widely used chat forums on the Internet today.

34. Chat Options Web chat Proprietary chat Buddy lists
Incorporates graphics, audio and video
Hosted by search engines such as Yahoo, Snap, and Excite.
Proprietary chat
Requires that you download and install software from a company.
Examples are Microsoft Chat, AOL, and Prodigy.
Buddy lists
You specify your list of friends and even tell when they are online.
Examples are ICQ and AOL Messenger

35. Mailing Lists A group of people with a shared interest.
Their addresses are collected into a group, and this group is identified by a single name.
When a message is sent to the group, everyone on the list receives that message.

36. Newsgroups A discussion forum or a type of bulletin board.
Each board is dedicated to discussion on a particular topic.
USENET
Worldwide network of computers that facilitates the transmission of messages among the news servers.

37. Analyzing Technology Issues

38. The Impact of Technology on Education
Internet
Distance Learning
Computer-Based Learning
Simulations

39. The Impact of Technology on Science
Artificial Intelligence
Genetic Engineering
Virtual Reality

40. The Impact of Technology on Work
Multinational Economy
Electronic Commerce

41. The Impact of Technology on Our Lives
Clothes that fight odor and bacteria
The flying car
Voice recognition
Space travel
Smart shoes and smart seats
Smart houses
Electronic shopping

42. Exploring Technology Careers
Business and Office
Administrative Assistant
Desktop Publisher/Graphic Designer
Network Support and Administration
PC Support Specialist
Manager of Information Systems
Web-Based
Web Developer
Web Master

43. Computer Crimes
A criminal act committed through the use of a computer. It can also involve the theft of a computer and any equipment associated with the computer.

44. Types of Computer Crimes
Computer fraud
Conduct that involves the manipulation of a computer or computer data in order to obtain money, property, or value dishonestly or to cause loss.
Computer hacking
Involves invading someone else’s computer, usually for personal gain or just the satisfaction of invasion.

45. Other Computer Crimes Theft of computer time Data diddling
An employee uses a company’s computer for personal use such as running a small business, keeping records of an outside organization, or keeping personal records.
Data diddling
Changing data before it is entered into the computer or after is has been entered into the computer.

46. Software Usage Commercial Software Shareware Freeware Public-Domain
Copyrighted by an individual or a business
Permission needed in order to copy
Shareware
Copyright protected
Distributed free on a trial basis
Payment by the honor system for satisfied users
Freeware
Given away free of charge
Owner often retains rights
Not necessarily free to copy and distribute
Public-Domain
Not copyrighted
Donated for public use
Free to copy and distribute

47. Software Pirates Someone that copies software illegally
Software companies usually prevent users from making multiple copies of their software by “locking” it
You must purchase a site license in order to software on more than 1 computer

48. Computer Viruses
A virus is a program that has been written to cause corruption of data on a computer.

49. Types of Computer Viruses
Worm
destructive computer program that bores its way through a computer’s files or through a computer network
makes many copies of itself, resulting in the consumption of system resources that slows down or actually halts tasks
Time Bomb
virus that does not cause its damage until a certain date or until the system has been booted a certain number of times
Logic Bomb
virus triggered by the appearance or disappearance of specific data
Trojan Horse
Virus that does something different from what it is expected to do

50. Privacy and Security Issues
Any time you submit information on the Internet, it is possible for the information to be gathered by many persons and used for various situations including being sold. Information can be gathered from online sources such as schools, banks, hospitals, insurance companies, and many other sources.

51. Security Measures Maintain and enforce security measures such as:
Passwords
Electronic identification cards
Firewalls
Antivirus software
Selective hiring process

52. How do I keep my computer safe?
Make back-up copies of all files on a regular basis
Don’t share disks from other computers—this increases your chance of catching a virus
Don’t boot from a floppy disk
Write-protect your disks
Use an anti-virus program to scan your files on a regular basis
Use caution when downloading files from the Internet—many are virus infected
File sharing on a Local Area Network (LAN) may also expose your files to a virus