2. Internet Today
With the advances of technology in the
20th century, the Internet has become a
widespread technological tool used for
various purposes including e-mail and
research databases. Even though the
usage of the Internet differs immensely
from person to person, it is widely used
depending on its novelties such as social
network systems, research databases and
e-mailing with people free from continental
boundaries and cheaper than any other
means of communication.
3. What is internet
The Internet is a global system of
interconnected computer networks that use
the standard Internet protocol suite to serve
billions of users worldwide. It is a network
of networks that consists of millions of
private, public, academic, business, and
government networks, of local to global
scope, that are linked by a broad array of
electronic, wireless and optical networking
technologies
4. The World Wide Web is a global set of
documents, images and other
resources, logically interrelated by
hyperlinks and referenced with
Uniform Resource Identifiers (URIs).
URIs symbolically identify services,
servers, and other databases, and the
documents and resources that they
can provide.
World Wide Web
6. Hypertext Transfer Protocol
Hypertext Transfer Protocol (HTTP) is the
main access protocol of the World Wide
Web, but it is only one of the hundreds of
communication protocols used on the
Internet. Web services also use HTTP to
allow software systems to communicate in
order to share and exchange business
logic and data.
7. How To Log On To The Internet
There are several steps to log on to the
internet:-
1. Sign up with an ISP (internet service
provider). Yahoo SBC, AOL, MSN are
examples of some of the big ones.
8. How To Log On To The Internet
2. Decide connection if you want DSL
(broadband) or dial-up (narrowband).
Broadband is much faster. It is a bit
more expensive, but if you want
torrents, audio, video then honestly
worth it.
9. How To Log On To The Internet
3.Get the proper hardware For dial-up, you need a
modem and a regular phone cord. This plugs into
your computer then the phone jack in the wall.
For DSL, you need an Ethernet cord (this plugs into
the router and the computer. It looks like a fat phone
cord). You need a router, generally gotten through
your ISP and the power cord this takes You need to
then plug all this into the wall with a cord and a little
piece that separates the phone from the DSL (this is
generally also given through your ISP).
10. How To Log On To The Internet
4.Choose an Internet Browser (the
window you view the internet on).
Internet Explorer is commonly on
computers, but Mozilla Firefox is a
much better choice. You are far less
likely to get viruses and pop-ups using
Firefox.
11. How To Log On To The Internet
5.Get start with internet Double click on
your browser A page will come up. If you
do not want this as your homepage, click
tools (up top by file edit etc..) ---> internet
options. At the top it says homepage. Put
in what you want
12. hyperlink is a reference to data that the
reader can directly follow, or that is
followed automatically. A hyperlink points
to a whole document or to a specific
element within a document. A user
following hyperlinks is said to navigate or
browse the hypertext.
Hyperlink
13. Types of hyperlink
Inline link:-
An inline link displays remote content
without the need for embedding the
content. The remote content may be
accessed with or without the user
selecting the link. For example, the image
above is a document that can be viewed
separately, but it is included into this page
with an inline link.
14. Types of hyperlink
An inline link may display a modified version of
the content; for instance, instead of an image, a
thumbnail, low resolution preview, cropped
section, or magnified section may be shown.
The full content will then usually be available on
demand, as is the case with print publishing
software – e.g. with an external link. This allows
for smaller file sizes and quicker response to
changes when the full linked content is not
needed, as is the case when rearranging a page
layout.
15. Types of hyperlink
Anchor:-
An anchor hyperlink is a link bound to a
portion of a document—generally text,
though not necessarily. For instance, it
may also be a hot area in an image
(image map in HTML), a designated, often
irregular part of an image. One way to
define it is by a list of coordinates that
indicate its boundaries.
16. Types of hyperlink
For example, a political map of Africa may
have each country hyperlinked to further
information about that country. A separate
invisible hot area interface allows for
swapping skins or labels within the linked
hot areas without repetitive embedding of
links in the various skin elements.
17. Uniform Resource Locator
A uniform resource locator, abbreviated
URL, also known as web address, is a
specific character string that constitutes a
reference to a resource. In most web
browsers, the URL of a web page is
displayed on top inside an address bar.
18. List of allowed URL characters
Unreserved :-
May be encoded but it is not necessary
A B C D E F G H I J K L M N O P Q R S T U V
W X Y Z
a b c d e f g h i j k l m n o p q r s t u v w x y z
0 1 2 3 4 5 6 7 8 9 - _ . ~
Reserved:-
Have to be encoded sometimes
! * ' ( ) ; : @ & = + $ , / ? % # [ ]
19. A web search engine is software code
that is designed to search for information on
the World Wide Web. The search results are
generally presented in a line of results often
referred to as search engine results pages
(SERP's).
Search Engine
20. Search Engine
The information may be a specialist in web
pages, images, information and other types of
files. Some search engines also mine data
available in databases or open directories.
Unlike web directories, which are maintained
only by human editors, search engines also
maintain real-time information by running an
algorithm on a web crawler.
