© Vera Castleman

The Internet

Grade 10

Definition The internet is a loose

collection of many computer networks. It provides access to information and communication.

A browser is a program written to help you surf the net. There are many

Some browsers allow you to open up more than one web site at a time.

Internet Access To gain access to the Internet you need:

An ISP (Internet Service Provider). Internet connection software. Connection hardware :

Analogue - a dial up access slow and subject to interference

ISDN - (Integrated Services Digital Network) faster and more reliable.

ADSL - (Asymmetric Digital Subscriber Line) faster and more stable. The subscriber can operate a data line and a voice line simultaneously.

Cable uses television channels fast and stable. Wireless Uses Wi-Fi (Wireless Fidelity) technologyneed

to be close to a Wi-Fi hotspot or radio antenna.

Use

Research Social Games Phone calls EFT (Electronic Fund Transfer)

WWW WWW World Wide Web. It is a graphics based environment Movement takes place using hyperlinks which are

indicated by a pointing finger: Hypertext is usually blue Hypermedia is a picture, movie or a drawing

When you click a hyperlink you are taken to another: Page Site Email etc.

Web site

A web site consists of many “pages”. We can move around these pages by clicking

hypertext or hypermedia. The site has been generated and is maintained by:

People who feel that they have something to offer. Companies who wish to advertise their wares and services. Universities, colleges and other educational institutes who

wish to share knowledge with the users of the Internet etc.

Domain

Is the virtual space that your web site occupies in the Internet world.

Each Internet site has to have a name. This is known as DNS (Domain Name System). A name has 5 parts: e.g. http://www.dlcbcats.co.za

http hypertext transfer protocol

If the address has an “s” attached this makes it a secure site. (https).

www World Wide Web

dlcbcats The company web name

co Indicating that it is a company

za from South Africa (Zuid Afrika)

Home Page

The first page of a web site It will usually give information about the “owner”

and will provide a “springboard” to other pages. Other pages Could all belong to the same web site They could provide a way to visit other web

sites by using hyperlinks.

Search Engine A search engine is a web site that will

look for the key word/s. It has a data base of references. It will display the most likely matches. It does not have the information you need. It will lead you to web sites that have the

information. It should never be used in a list of

references in a bibliography.

If you have generated a web site you can build in keywords on each page. Most search engines use a web crawler (or Spider) program to pick up references from web sites. These references will be used to help the web site enter the search engines data base.

Copyright and the web

Any information you use from the web belongs to someone else. It is their intellectual property.

ACADEMIC COMMERCIAL

ACADEMIC

You need to acknowledge the source from where you obtained the information.

All work should be written in your own words in other words do not copy and paste!

You should include anything that you use directly in inverted commas and acknowledge the site and author immediately.

COMMERCIAL

As for academic BUT you need to obtain permission to use it.

When researching using the internet, be careful of the type of sites you use to get your information.

Don’t believe everything you read on the internet. Always check facts using two or more web sites.

Download/Upload Download:-The data that we access is downloaded

to RAM. If we find something that we need it must go to more secondary storage.

If we print the page all the adverts and banners on the page will also be printed. This wastes paper.

We can select what we need copy and paste it into a word processor and then SUMMARISE it before handing it in.

Upload:- sending information to a web site

Internet Cookie

This is a small text file which some Internet sites generate.

It is stored on your computer and the next time you enter the site the cookie is read and the site can be displayed with any personal preferences you may have given the last time you accessed the site.

It also can help to load the site quicker the second time you visit it.