Important Information About Internet

The Internet is a network of computers linking many

different types of computers all over the world, ft is a

network of networks sharing, a common mechanism

for addressing, (identifying) computers,, and »

common set of communication protocols for

communications between two computers on .the

network.

2.

Four basic services provided by the Internet to its

users are electronic mail, file transfer protocol, telnet,

and Usenet news. ' .

3. Electronic .mail service (known as e-mail in short)

enables an Internet user to send a mail (message) to

another Internet user in any part of the world in a

near-real-time manner.

4. File Transfer Protocol service (known as FTP in

short) enables an Internet user to move a file from

one computer to another on the Internet

5. Telnet service enables an Internet *user to log in to

another computer on the Internet from higher local

computer.

6. Usenet service enables a group of Internet users

exchange their views/ideas/information on some

topic of interest with all members belonging to the

7. The WWW uses a concept called hypertext

documents on the Internet are known as Web Pages.

Pages are created by using a special language

hypertext Markup Language (HTML) that is a

language for linking documents for easier to

access and manipulation.

8. To be used as a web client, a computer needs to be

with a special software tool that is known as- browser.: Browsers*normally provide several navigation facilities' help users save time while Internet surfing.

9. The Internet has already-proved to be a valuable tool for

use in many significant ways. Some current strategic uses

of the Internet are for on-line communication, software

.sharing, exchange of views on topic-? of common interest,

posting  of information  of general   interest,  product

promotion, feedback about products, cus'crr; .r .support.

Service,   on-line 'journals   and   magazines,   on-line shopping, and worldwide video conferencing.

TOP 10 USES OF THE INTERNET

The world wide scope of the Internet makes it, perhaps, the single most valuable tool for use in many significant by both non-profit and commercial organizations. Some important current strategic uses of the Internet are:

 1.        On-line communication. Computer users around the world extensively use the e-mail service on the
Internet to communicate with each other, With this facility, the Internet has proved to be a rapid and
productive communication tool for millions of users.

2.   Software sharing.    The Internet provides access to a large number of shareware software,
development tools, and utilities. A few examples of such • shareware tools are compilers, code
libraries, mail servers, and operating systems. For example, a set of such shareware tools is available
via ftp from the Internet site sunsite.unc.edu. The Free Software Foundation provides a wealth of
GNU software tools on the Internet that can be downloaded free of Charge. For more details on
software tools offered by the Free Software Foundation, you can anonymous ./Sp to the Internet site

3.     Exchange of views on topics of common interest The Internet has a number of news groups. Each
news group enables a group of users to exchange their views on some topic of common interest. For
example, the news group comp.os.os2.advocacy contains views about the OS/2 operating system.

4.     Posting of information of general interest Many users use the Internet as a large electronic bulletin
board on which information of general interest can be posted to bring .it to the attention* of, interested
users around the world; Some such information include career opportunities, conference and event
announcements, and calls for papers for conferences and journals.

5.     Product promotion. Several commercial organizations use the Internet services for promoting their
products effectively. These organizations make use of WWW server sites that are focused on
disseminating timely information about corporate happenings, product announcements, recent
strategic alliances, press releases, and other information of potential interest to existing "and
prospective, customers, for example, computer. system .announce news group contains information about
Sun Microsystems latest product announcements.

6.     Feedback about products.   Commercial organizations also use the Internet to gather information
about user satisfaction of existing products, market opportunities of new products, and ideas for
potential new products. This is usually accomplished by putting up an interactive survey application
by the organization on a WWW site on the Internet

7.     Customer support service.  Many organizations also use the Internet to provide timely customer
support. The combined e-mail, ftp, and other services on the Internet provide necessary enabling tools
for such first-rate customer support. For example, bugs in fielded software products can be reported to-,
an organization via e-mail, and bug fixes, minor releases, workarounds, known problems and
limitations, and general advice about a product can be made available by an organization to its
customers via an ftp server.

8.           On-line journals and magazines.    The Internet now has^ literally thousands of electronic
subscriptions found both for free and low cost. There are many WWW sites on the Internet dealing
with electronic versions of many journals and magazines. For example, the Internet edition of the
Times of India newspaper is available at the internet http://www.timesofindia.com. Researchers
have extended this idea to support full-fledged electronic libraries on the internet

9. On-line shopping.   The internet has also facilitated the introduction of a new market
consisting of virtual shops. These shops remain open 24 hours all the year round, and are J
purchasers all around the world. They provide information about products or services for sale 1
WWW servers. Using the Internet services, customers submit specific product queries a»irf
specific sales quotes. Through a well-defined authorization and authentication scheme, the
services are then used to accept orders placed by customers, to handle order payments*and to*1
orders to fulfillment.. For example, the Internet site amcaon.com is a WWW-based bookshop
Internet, where information on all types of International books can be found and books can be
on-line.

10. Worldwide video conferencing.   Worldwide video conferencing is an emerging service on
.   Internet allowing a group of users located around the globe to talk and interact with each other

they were sitting and discussing in a single room. The parties interacting can see each other tall their computer screens and can hear each other's voice through a special audio-device fixed in computers. The CU-Selene system developed at Cornell University is an example of an Ir based video conferencing system.

What Is Telnet

Telnet

Telnet service. Enables-.an Internet user to log in to another computer on the Internet from his/her local That is, a user can execute the telnet command on his/her local computer to start a login session on a computer. This action is also called "remote login/'

.

To start a remote login session, a user types the command re/net and address of the remote computer on

local computer terminal. The system then asks the user to enter a login name (user ID) and a password, the remote computer authenticates the user to ensure that he/she is authorized to access it. If the user correct login name and password, he/she is logged on to the remote computer. Once login session is es with the remote computer, telnet enters input mode, and anything typed on the terminal of the local comj the user is sent to the remote computer for processing.

Some common uses of telnet service are:

1.            Using computing power of remote computer. The focal computer may be an ordinary
computer and the remote computer may be a powerful super computer.      *

2.     Using a software on remote computed A software-that a user wants to use may not be avi
his/her computer.        -                 ' ,                                                                   .

3.            Accessing remote computer's database or archive. An information archive of interest to a use
as public database or’ library resources may be available on the remote computer.         "

4.     For logging in to ones o\van computer- from another computer. For example, if a user is
conference in another city and has access to a computer on the Internet, he/she can telnet his/her own computer and read his/her electronic mails or access some information stored there.

What is Internet.

The Internet
DEFINITION (WHAT IT IS?)
The Internet Is a network of computers linking many different types of computers all over the network of networks sharing a common mechanism for addressing (identifying) computers, and a communication protocols for communications, between two computers on the network.

BRIEF HISTORY
The Internet has its root in the ARPANET system of the Advanced Research Project Agency Department of Defense. ARPANET was the first WAN and had 6nly four sites in 1969. The Internet < basic ideas of ARPANET for interconnecting computers, and was used by research organizations and initially to share and exchange information. In 1989, the U.S. Government lifted restrictions on use of the J and allowed it to be used for commercial purposes as well. Since then, the Internet has grown rapidly the worldjs largest network. It now interconnects more than 30,000 networks, allowing more than computers, and more than 50 million computer users in more than 150 countries around the world to witheachother. The Internet continues to grow at a rapid pace.

ITS BASIC SERVICES
There are four types of services provided by the Internet to its users. These are described below.
Electronic mail service (known as e-mail in short) enables an Internet user to send a mail {message) to another user in any part of the world in a near-real-time manner. An e-mail message takes a few seconds to / minutes to reach its destination, because it travels from one network to another, until it reaches its destination.
E-mail service has many similarities with postal mail service. AH Internet users have an e-mail address, just as all of  us have a postal address. Each Internet user has a logical mailbox, just as each one of us has a mailbox in our house. When sending a mail to another user, a sender specifies the e-mail address of the receiver, just as we write address of the receiver of a post in postal mail system. E-mail service delivers an already sent mail into its mailbox. The receiver extracts the mail from his/her mailbox and reads it at his/her own convenient
just as in a postal mail system. After reading the message, the receiver can save it, delete it, pass it to
else, of respond by sending another message back. .

Messages in e-mail -service can contain hot only text documents but also image, audio, and video data. Only fiction' is that the data must be digitized, that is, converted to a computer-readable format.
with e-mail service, the Internet has proved to be a’ rapid and  productive' communication  tool for millions of users, compared to paper mail, telephone, and fax many prefer e-mail because f its following advantages:

1.It is faster than paper mail.
2.Unlike telephone, the persons communicating need not be available at the same time.
3.Unlike fax documents, e-mail documents can be stored in a computer, "and cart be edited easily using editing programs.

Elements Of An Information System

"To be valuable, information must be accurate, orgnization, timely, accessible, useful, and cost-to produce. Generating information From a computer requires the following five elements
• Hardware
• Software
• Data
• People
• Procedures
logether, these elements (hardware, software, data, people, and procedures) comprise an information  system. Figure shows how each of the elements of an information system in a large business might interact.
The hardware must be reliable and capable of handling the expected workload. The software must be developed carefully and tested thoroughly. The data entered into the com¬puter must be accurate.
Most companies with mid-sized and large computers have an IT (information technol-ogy) department. Staff in the IT department should be skilled and up-to-date on the latest technology. IT staff also should train users so that they understand how to use the com-puter properly. Today's users also work closely with IT staff in the development of computer applications that relate to their areas of work.
Finally, all the IT applications should have readily available documented procedures that address operating the computer and using its applications.

What Web sites do users visit on the Internet?

A recent survey found that users visit various types of Web sites, as shown in the chart below. For more information, visit scsite.com/dc2009/ ch1/faq and then click Web Sites.

Many people use the Web as a means to share personal information/ photos/ and videos with the world. Anyone can create a Web page and then make it available/ or publish it/ on the Internet for others to see. Some Web sites provide publishing services at no cost.

Millions of people worldwide join online communities/ each called a social networking Web site/ that encourage members to share their interests/ ideas/ stories/ photos/ music/ and videos with other registered users . Some social networking Web sites are college oriented/ some business oriented/ and others are more focused. A photo sharing community/ for example/ is a specific type of social networking Web site that allows users to create an online photo album and store and share their digital photos. A video sharing community is another type of social network­ing Web site that allows users to store and share their personal videos. Read Ethics & Issues 1-2 for a related discussion.

Hundreds of thousands of people today also use blogs to publish their thoughts on the Web. A blog is an informal Web site consisting of time-stamped articles in a diary or journal for­mat/ usually listed in reverse chronological order. As others read the articles in a blog/ they reply with their own thoughts. A blog that contains video clips is called a video blog.

Podcasts are a popular way people verbally share information on the Web. 

The Internet

The Internet is a worldwide collection of networks that connects millions of businesses, government agencies, educational institutions, and individuals.
More than one billion people around the world use the Internet daily for a variety of reasons, including the following:
•Communicate with and meet other people
•Conduct research and access a wealth of
information and news
•Shop for goods and services
•Bank and invest
•Take a class
•Access sources of entertainment and leisure,
such as travel directories, online games,
music, videos, books, and magazines
•Download music and video
•Share information, photos, and videos

NETWORKS AND THE INTERNET

A network is a collection of computers and devices connected together, often wirelessly, via communications devices and transmission media. When a computer connects to a network, it is online.

Networks allow computers to share resources, such as hardware, software, data, and infor­mation. Sharing resources saves time and money. In many networks, one or more comput­ers act as a server. The server controls access to the resources on a network. The other comput­ers on the network, each called a client or work­station, request resources from the server (Figure 1-6). The major differences between the server and client computers are that the server ordinarily has more power, more storage space, and expanded communications capabilities.

Many homes and most businesses and schools network their computers and devices. Most allow users to connect their computers wirelessly to the network. Home networks usually are small, exist­ing within a single structure. Business and school networks can be small, such as in a room or building, or widespread, connecting computers across a city country, or the globe. The world's largest computer network is the Internet.

SHOPPING AND AUCTIONS WEB EXERCISES

Visit two of the computers and electronics and two of the miscellaneous Web sites listed in Figure 18. Write a paragraph describing the features these Web sites offer compared with the same offerings from stores. In

another paragraph, describe any disadvantages of shopping at these Web sites instead of actually visiting a store. Then, describe their policies for returning unwanted merchandise and for handling complaints.

Using one of the auction Web sites listed in Figure 18, search for two objects pertaining to your hobbies. For example, if you are a sports fan, you can search for a complete set of Upper Deck cards. If you are a car buff,

search for your dream car. Describe these two items. How many people have bid on these items? Who are the sellers?What are the opening and current bids?

SHOPPING AND AUCTIONS WEB SITES

BARGAINS GALORE

let Your Mouse Do Your Shopping

from groceries to clothing to computers, you can buy just about everything you need with just a few clicks of your mouse. Electronic retailers (e-tailers) are cashing in on cybershoppers' purchases. Books, computer software and hardware, and music are the hottest commodities.

The two categories of Internet shopping Web sites are those with physical counterparts, such as Wal-Mart and Best Buy, and those with only a Web presence, such as Amazon and Buy. Popular Web shopping sites are listed blew

Another method of shopping for the items you need, and maybe some you really do not need, is to visit auction Web sites, including those listed in Figure 18. Categories include antiques and collectibles, automotive, computers, electronics, music, sports, sports cards and memorabilia and toys. Online auction Web sites can offer unusual items, including Star Wars props and memorabilia and a round of golf with Tiger Woods. eBay is one of thousands of Internet auction Web sites and is the world's largest personal online trading community.

Sites are

Yahoo Shopping (CPC) - Allows users to list product catalogs, find, compare, read reviews and buy items for sale across related Yahoo areas. Merchants get to promote products, pay for performance and manage their campaign from an easy-to-use interface. CPC based pricing, depends on the categories you wish to have products listed within. Accepts manual or bulk uploads via FTP.

Amazon.com (Percentage) - Offers several different options for sellers depending on whether you own a site, the products and a business or want to use their products, site, tools or order fulfillment to list and sell. Allows merchants to sell new and used items from their catalogs and upload them one at a time or using their volume listing tools. Referral percentage based pricing depends on the option that best suits your needs.

Shopping.com (CPC) - Owned by eBay, a comparison shopping engine that allows users to list their catalogs along with thousands of other trusted merchants to be distributed within the Shopping.com networks. Offers shoppers easy-to-use tools, time saving navigation and product reviews from ePinions so they can better find, compare and buy whatever they are shopping for. CPC based pricing.

Ask Shopping (Pronto.com Affiliate) - Allows users to surf and compare Pronto listings from Ask.com for products, brands, pricing and reviews. Popular sections include by occasion, by interest, by category and by recipient. Submit through Pronto.com affiliate, CPC based pricing, FTP uploads.

Lycos Shopping (Pronto.com Affiliate) - Allows users to surf and compare Pronto listings from Lycos shopping for products, brands, pricing and reviews. Popular sections include apparel, baby, electronics, flowers, health, home and more. Submit through Pronto.com affiliate, CPC based pricing, FTP uploads.

FINANCE WEB EXERCISES

Visit three advice and education Web sites listed in Figure 14 and read their top business world reports. Write a paragraph about each, summarizing these stories. Which stocks or mutual funds do these Web sites predict as

being sound investments today? What are the current market indexes for the DJIA (Dow Jones Industrial Average), S&P

500, and NASDAQ, and how do these figures compare with the previous day's numbers?

Using two of the stock market Web sites listed in Figure 14, search for information about Microsoft, Adobe Systems, and one other software vendor. Write a paragraph about each of these stocks describing the

revenues, net incomes, total assets for the previous year, current stock price per share, highest and lowest prices of

each stock during the past year, and other relevant investment information.

MONEY MATTERS

Cashing In on Financial Advice
You can manage your money with advice from financial Web sites that offer online banking, tax help, personal finance, and small business and commercial services.
If you do not have a personal banker or a financial planner, consider a Web adviser to guide your invest¬ment decisions. The Yahoo! Finance Web site (Figure1) provides financial news and investment information.

If you are ready to ride the ups and downs of the NASDAQ and the Dow, an abundance of Web sites listed in Figure 2, including Reuters and Morningstar, can help you pick companies that fit your interests and financial needs.

Crown.org – The Crown Financial website has hundreds of articles sorted by topic and has lots of other goodies and resources.

eChristianFinance.com – A good place to find some good articles about Christian finances and stewardship. They also have a bunch of tools and worksheets as well.

Generousgiving.org – This site is just loaded with information. There are tons of videos, audio interviews, articles, etc.

Masteryourmoney.com – Ron Blue’s site that has tons of free videos answering common financial questions. Seriously, I think they have a video answer to every question you could have about your money.

Moralmoney.com – MoralMoney is focused on helping Christians make investment decisions that line up with their beliefs. They have a free newsletter and a free stock-screening tool that will help you decide if a company is worthy of your investment dollars.

Claiming to be the fastest, easiest tax publication on the planet, the Internal Revenue Service Web site contains procedures for filing tax appeals and contains IRS forms, publications, and legal regulations.

THE FUTURE OF THE PLANET

Making a Difference for Earth

From the rain forests of Africa to the marine life in the Pacific Ocean, the fragile ecosystem is under extreme stress. Many environmental groups have developed Web sites, in attempts to educate worldwide populations and to increase resource conservation. The New information for people who would like to help safeguard the environment.
On an international scale, the Environmental Sites on the Internet Web page developed by the Royal Institute of Technology in Stockholm, Sweden, has been rated as one of the better ecological Web sites. Its comprehensive listing of envi¬ronmental concerns range from aquatic ecology to wetlands.
The U.S. federal government has a number of Web sites devoted to specific environmental concerns. For example, the U.S. Environmental Protection Agency (EPA) provides pollu¬tion data, including ozone levels and air pollutants, for specific areas. Its AirData Web site displays air pollution emissions and monitoring data from the entire United States and is the world's most extensive collection of air pollution data.

What We Do

We are environmental engineers and scientists providing air quality consulting; environmental, health and safety management; and environmental engineering services to industry. EES was founded in 1996 by Tom N. Petersen, a professional engineer who has helped numerous industrial and other clients comply with…

• Clean Air Act
• Clean Water Act
• OSHA Regulations
• State Regulations
• Local Requirements

TRAVEL WEB EXERCISES

Visit one of the cartography Web sites listed in Figure 10 and obtain the directions from your campus to one of these destinations: the White House in Washington, D.C.; Elvis's home in Memphis, Tennessee; Walt Disney World in Orlando, Florida; or the Grand Old Opry in Nashville, Tennessee. How many miles is it to your destination? What is the estimated dhving time? Use the Google Maps Web site to obtain an overhead image of this destination. Then, visit one of the general travel Web sites listed in the table and plan a flight from the nearest major airport to one of the four destinations for the week after finals and a return trip one week later. What airline, flight numbers, and departure and arrival times did you select?
Visit one of the travel and city guides Web sites listed in Figure 10, and choose a destination for a getaway this coming weekend. Write a one-page paper giving details about this location, such as popular hotels and lodging, expected weather, population, local colleges and universities, parks and recreation, ancient and modern history, and tours. Include a map or satellite photograph of this place. Why did you select this destination? How would you travel there and back? What is the breakdown of expected costs for this weekend, including travel expenditures, meals, lodging, and tickets to events and activities? What Web addresses did you use to complete this exercise?

Explore the World without Leaving Home

When you are ready to arrange your next travel adventure or just want to explore destination possibilities, the Internet provides ample resources to set your plans in motion.
To discover exactly where your destination is on this planet, cartography Web sites, including MapQuest and Maps.com, allow you to pinpoint your destination. View your exact destination using satellite imagery with Google Maps (Figure) and Live Search Maps.
Some good starting places are general travel Web sites such as Expedia Travel, Cheap Tickets, and Travelocity. Many airline Web sites allow you to reserve

hotel rooms and rental cars while booking a flight. These all-encompassing Web sites, including those in Figure, have tools to help you find the lowest prices and details on flights, car rentals, cruises, and hotels.

ONLINE SOCIAL NETWORKS AND MEDIA SHARING WED EXERCISES

Many individuals now use online social networks. Visit two online social networks listed in Figure 7. (If you are attempting to access an online social network from your classroom and are unable to do so, your school may have restricted use of social networking Web sites.) Compare and contrast these two sites by performing the following actions and recording your findings. Rrst, create a profile on each of these sites. If you find a Web site that charges a fee to sign up, choose another Web site. How easy is the sign-up process? Does either Web site ask for any personal information you are uncomfortable sharing? If so, what information? Once you sign up, make a list of five of your closest friends, and search for their profiles on each of these two sites. What site contains more of your friends? Browse each site and make a list of its features. In your opinion, what site is better? Explain why.

Media sharing Web sites make it extremely easy to share photos and videos with friends, family, and colleagues.
Before choosing an online media sharing Web site to use, you should do some research. Visit two media sharing Web. Is there a fee to post media to these Web sites? If so, how much? Are these Web sites supported by advertisements? Locate the instructions for posting media to these Web sites. Are the instructions straightforward? Do these Web sites impose a limit on the number and/or size of media files you can post? Summarize your responses to these questions in two or three paragraphs.

Online Social Networks and Media Sharing Web Sites More Popular than Ever

Do you ever wonder what your friends are doing? What about your friends' friends? The popularity of online social networks has increased dramatically in recent years. Online social networks, such as those listed in Figure 7, allow you to create a personalized profile that others are able to view online. These profiles may include information about you

such as your hometown, your age, your hobbies, and hires. You also may create links to your friends' pages, messages for individual friends, or bulletins for all of friends to see. Online social networks are great places not] only to keep in touch with your friends, but to reconnect1 old friends and meet new friends!

 If you would like to post pictures and videos and do: require the full functionality of an online social network, might consider a media sharing Web site, which is a type of online social network. Media sharing Web sites such as Yc  and Phanfare allow you to post media, including photos and videos, for others to view, print, and/or Media sharing Web sites, which may be free or charge a fee; provide a quick, efficient way to share photos of your last vacation or videos of your family reunion.

BLOGS WEB EXERCISES

Visit three of the blog Web sites listed in Figure 6. Make a table listing the blog name, its purpose, the author, its audience, and advertisers, if any, who sponsor the biog. Then, write a paragraph that describes the information you found on each of these blogs.

Many Internet users read the technology blogs to keep abreast of the latest developments, visit the Geek News Central and Scripting News blogs listed in Figure 6 and write a paragraph describing the top story in each blog. Read the posted comments, if any. Then, write another paragraph describing two other stories found on these blogs that cover material you have discussed in this course. Write a third paragraph discussing which one is more interesting to you. Would you add reading blogs to your list of Internet activities? Why or why not?

Blogosphere Growing Swiftly

Internet users are feeling the need to publish their views, and they are finding Weblogs, or blogs for short, the ideal vehicle. The blogosphere began as an easy way for indi-victuals to express their opinions on the Web. Today, this communication vehicle has become a powerful tool, for individuals/ groups, and corporations are using blogs to promote their ideas and advertise their products. It is not necessary to have a background in Web design to be able to post to a blog.

Bloggers generally update their Web sites frequently to reflect their views. Their posts range from a paragraph to an entire essay and often contain links to other Web sites. The more popular blogs discuss politics, lifestyles, and technology.
 Google's Blogger Web publishing service hosts thousands of blogs ranging from business to personal interests.
Individuals easily may set up a blog free or for a fee, using Web sites such as Blogger Cooeey, and TypePad. In addition, online social networks may have a built-in Hogging feature. Be cautious of the information you

post on your blog, especially if it is accessible to everyone online.

Corporate blogs, such as The GM FastLane Blog, discuss all aspects of the company's products, whereas all-encompassing blogs, such as the Metafilter Community Weblog and others in Figure 6, are designed to keep general readers entertained and informed.

Blogs are affecting the manner in which people communicate, and some experts predict they will one day become our primary method of sharing information.

BLOGS WEB SITES

A List Apart	alistapart.com
BloQ.com	blog.com
Blog Flux	topsltes.Uogfiux.com
Blogger	bfogger.com
Bioglines	blogiiiies.com
Blogstream	btogstream.com
Being Boing: A Directory of Wonderful Things	boingboing.net
Cooeey	cooeey.com .
Davenetics * Politics + Media + Musings	davenettcs.com
Geek News Centra!	geeknewscentral.com
GM FastLane Blog	fastlane.gmblogs.com
kotHce.org: home of fine Hypertext products	tasttke.org
MetaFilter Community Weblog	metaAKsr.com
Scripting News	scripting.com
TypePad	typepad.com
	visitscsite.com/dc2009/
rOr fnOfe InlQnTKluQn aOOUl DlOyS WeD SnSS, ctWweb.

RESEARCH WEB EXERCISES

Use two of the search engines listed in Figure 4 to find three Web sites that review the latest cell phones from Motorola and Samsung. Make a table listing the search engines, Web site names, and the phones' model numbers, suggested retail price, and features.

Visit the Webopedia Web site. Search this site for five terms. Create a table with two columns: one for the cyberterm and one for the Web definition. Then, create a second table listing five recently added or updated words and their definitions on this Web site. Next, visit the Techbargains Web site to choose the components you would buy if you were building a customized desktop computer and notebook computer. Create a table for both computers, listing the computer manufacturer, processor model name or number and manufacturer, clock speed, RAM, cache, number of expansion slots, and number of bays.
components that best fit your needs and budget. If you are not confident in your ability to solve a problem alone, turn to online technical support. Web sites often provide streaming how-to video lessons, tutorials, and real-time chats with experienced technicians. Hardware and soft¬ware reviews, price comparisons, shareware, technical questions and answers, and breaking technology news are found on comprehensive portals.