Презентация на тему Internet and The World Wide Web

networks that links millions of businesses, government agencies, educational

institutions, and individuals

popular internet activity
You can exchange email with your

family and friends
The three most popular types of Internet communication are e-mail, instant messaging, and discussion groups.

Internet applications
You can purchase goods using checks, credit cards,

or electronic cash.

the world’s largest libraries directly from your home computer
You

also will find the latest local, national, and international news

movies, magazines, and computer games
You will find live

concerts, movie previews, book clubs, and interactive live games.

take classes on almost any subject
There are courses for

high school, college, and graduate school credit.

to communicate with other people on the Internet via

electronic Mail, bulleting boards, chat rooms, social networking, and news groups.
EMAIL
INSTANT MESSAGING
REAL TIME CHAT
SOCIAL NETWORKING

as remote login, or information access
permit users to

log in to other computers from their computers for the purpose of obtaining information
TELNET

users to obtain files from other sites and bring

them to their computers.
This is commonly referred to as file transfer.
FILE TRANSFERPROTOCOL

of bits.
A bit the smallest unit of information

used by computers

Today’s data transmission speeds are measured in bits, kilobits, megabits, and gigabits per second:

Bps (bits per second) A computer with an older modem might have a speed of 28,800 bps, which is considered the minimum speed for visiting websites with graphics.
Kbps (kilobits per second or 1 thousand bits per second) This is the most frequently used measure. The speed of a modem that is 28,800 bps might be expressed as 28.8 Kbps.

(megabits per second or 1 million bits per second)

Faster means of connection.
Gbps (gigabits per second or 1 billion bits per second)

Upload – is the transmission of data from a local computer to a remote computer, as from your PC to a website you are constructing
Download – is the transmission of data from a remote computer to a local computer, as from a website to your own PC.

name given to any of several standards – so

called 802.11 standards-set by the Institute of Electrical and Electronic Engineers (IEEE) for wireless transmission One standard, 802.11b, permits wireless transmission f data at 1.11 Mbps up to 300 feet from an access point, or hot spot, a station that sends and receives data to and from a Wi-Fi network.
3G (Third Generation) - Wireless 3G is loosely defined as high-speed wireless technology that does not need access points because it uses the existing cellphone system.

that offers a variety of Internet services from a

single, convenient location.


Wireless portal is a portal designed for Internet-enabled mobile devices

site contains newsworthy material including stories and articles relating

to current events, life, money, sports, and the weather.
Many magazines and newspapers sponsor Web sites that provide summaries of printed articles, as well as articles not included in the printed versions. Newspapers and television and radio stations are some of the media that maintain news Web sites.

factual information.
Government agencies have informational Web sites

providing information such as census data, tax codes, and the congressional budget.
Other organizations provide information such as public transportation schedules and published research findings

that promotes or sells products or services. Nearly every

business has a business/marketing Web site.
Many of these companies also allow you to purchase their products or services online.

offers exciting, challenging avenues for formal and informal teaching

and earning.
For a more structured learning experience, companies provide online training to employees and colleges offer online classes and degrees.
Instructors often use the Web to enhance classroom teaching by publishing course materials, grades, and other pertinent class information.

and engaging environment. Popular entertainment Web sites offer music,

videos, sports, games, ongoing Web episodes, sweepstakes, chats, and more. Sophisticated entertainment Web sites often partner with other technologies.
For example, you can cast your vote about a topic on a television show.

contains content that describes a cause, opinion, or idea.

The purpose of an advocacy Web site is to convince the reader of the validity of the cause, opinion, or idea.
These Web sites usually present views of a particular group or association.

log, is a Web site that uses regularly updated

journal format to reflect the interests, opinions, and personalities of the author and sometimes site visitors.
Blogs have an informal style that consists of a single individual’s ideas (similar to a diary) or a collection of ideas and thoughts among visitors.