Critical Understanding of ICT, B.Ed Sem I

1. Browsers and Search Engines
Kavitha N Karun
Army Institute of Education

2. Browsers
• A web Browser is an application to
connect computers with Internet
• It helps in accessing and displaying
web pages.
• Commonly used Web Browsers are
Internet Explorer, Netscape
Navigator, Firefox, Google Chrome
etc.

3. Search Engines
• A web Search Engine is a software
system 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 (SERPs)
• Commonly used search engines are
Yahoo, Google, MSN Search, Bing,
Ask.com, AOL.com, Baidu, DuckDuckGo
etc...

4. Types of Search Engines
• Crawler-Based Search Engines
• Human-Powered Directories
• Hybrid Search Engines" Or Mixed
Results

5. Crawler-based search engines
• E.g. Google, AllTheWeb and AltaVista
• Create their listings automatically by using a
piece of software to “crawl” or “spider” the
web and then index what it finds to build the
search base.
• Web page changes can be dynamically caught
by crawler-based search engines and will
affect how these web pages get listed in the
search results.

6. • Good for specific search when topic is in
mind.
• If search topic is general, crawler-base search
engines may return hundreds of thousands of
irrelevant responses to simple search
requests.

7. Human-Powered Directories
• Eg. Yahoo directory, Open Directory and
LookSmart
• depend on human editors to create their listings.
• Typically, webmasters submit a short description
to the directory for their websites
• or editors write one for the sites they review
• these manually edited descriptions will form the
search base.
• Therefore, changes made to individual web
pages will have no effect on how these pages get
listed in the search results.

8. • Human-Powered directories are good when
you are interested in a general topic of search.
• In this situation, a directory can guide and
help you narrow your search and get refined
results.
• However, this is not an efficient way to find
information when a specific search topic is in
mind.

9. Search Engines Types
Google Crawler-based search engine
AllTheWeb Crawler-based search engine
Teoma Crawler-based search engine
Inktomi Crawler-based search engine
AltaVista Crawler-based search engine
LookSmart Human-Powered Directory

10. Open Directory Human-Powered Directory
Yahoo
Human-Powered Directory, also
provide crawler-based search
results powered by Google
MSN Search
Human-Powered Directory
powered by LookSmart, also
provide crawler-based search
results powered by Inktomi
AOL Search
Provide crawler-based search
results powered by Google
AskJeeves
Provide crawler-based search

11. HotBot
Provide crawler-based search
results powered by
AllTheWeb, Google, Inktomi
and Teoma, “4-in-1” search
engine
Lycos
Provide crawler-based search
results powered by AllTheWeb
Netscape Search
Provide crawler-based search
results powered by Google

12. Browser Search Engine
Programmed to browse
a webpage
to search for a webpage
web browser can exist
without a search engine
search engine needs a
web browser to display
its results
web browser is the basic
element in accessing the
Internet.
search engine is to
simply search for
keywords in a search
engine’s database.
Difference between
Browser and Search Engine

13. you can’t access any data
without a web browser
you can go to a certain
website without the use
of a search engine.
a web browser is a
software application that
needs to be installed on a
system
Search engines do not
require any installation on
any system and are openly
accessible to anyone
through the use of a web
browser.
Access web pages and web
sites
Searches and filters
websites

14. References
https://www.webfuel.ca/what-is-the-difference-
between-a-browser-and-a-search-engine
retrieved on 12 Aug 2018
https://en.softonic.com/windows/browsers
Retrieved on 12 Aug 2018