Familiarization with Web Tools
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This document provides an overview of web tools and search engines. It discusses the history of web browsers from Tim Berners-Lee inventing the World Wide Web in 1990 to modern browsers like Chrome, Firefox and Safari. It also explains how search engines like Google, Yahoo and Bing work by crawling the web, indexing pages and returning relevant search results. The document aims to familiarize students with using common web tools and information retrieval through search engines.
Familiarization with Web Tools
- 1. Z Week 4: Familiarization with Web Tools Subject Code: COMP121 By: Marlon Jamera Email: mjdesignexpress@gmail.com
- 2. Z Review: Using Internet Applications 1. Allows setting rules that computers use to move files from one computer to another on the internet. a. HTML b. HTTP c. FTP d. TCP/IP
- 3. Z Review: Using Internet Applications 1. Allows the transfer or copying of files from one computer to another. a. HTML b. HTTP c. FTP d. TCP/IP
- 4. Z Review: Using Internet Applications 1. Allows real time, text based communication through the internet. a. E-mail b. IRC c. Channels d. Chat Rooms
- 5. Z Review: Using Internet Applications 1. In what year did Tim Berners β Lee invented the WWW that is the fastest- growing internet service nowadays? a. 1990 b. 1991 c. 1992 d. 1989
- 6. Z Review: Using Internet Applications 1. Allows user to access files from different computers by looking through hierarchically menus to find specific topics. a. WAIS b. Gopher c. WWW d. HTTP
- 7. Z Familiarization with Web Tools
- 8. Z Scope of the Lesson β’ Web Browsers β’ Mozilla Firefox β’ Google Chrome β’ Internet Explorer β’ Safari β’ Information Retrieval β’ Google β’ Yahoo β’ Bing
- 9. Z Learning Outcomes By the end of the lesson, you will be familiar and know the web tools and recognize the usage of the search engines. β’ Outline the current web browsers according to its usage. β’ Explain how to retrieve information through keyword search.
- 10. Z Learning Outcomes β’ Know the functionalities of each of the browsers and its advantages towards its co-browsers. β’ Differentiate briefly the search engines and its uses.
- 11. Z What is a Web Browser? β’ What is this technology? β’ A web browser or internet browser is a software application for retrieving, presenting and traversing information resources on the World Wide Web.
- 12. Z What is a Web Browser? β’ What is this technology? β’ Although browsers are primarily intended to access the World Wide Web, they can also be used to access information provided by web servers in private networks or files in file system.
- 13. Z History β’ The first browser was invented in 1990 by Mr. Tim Berners β Lee. It was called worldwideweb (no spaces) and was later renamed as Nexus. β’ In 1993, browser software was further innovated by Marc Andreessen with the release of Mosaic (Later Netscape)
- 14. Z History β’ Microsoft responded with its Internet Explorer in 1995, also heavily influenced by Mosaic, initiating industryβs first browser war. β’ Opera debuted in 1996. β’ January 1998 was also the month that Netscape started the open source Mozilla Project.
- 15. Z History β’ Google Chrome, was released in September 2008. How Browser Works? β’ The browserβs main functionality is to present the web source you choose, by requesting it from the server and displaying it on the browser window.
- 16. Z How Browser Works? β’ The resource is usually an HTML document, but may also be a pdf, images, video and other medias. β’ The server program, gathers the request from the web browser, tries to hunt for the web page and then formulates a response. β’ After that, the browser picks up all the information coming in from the server and does its best to display the web page.
- 17. Z Add-ons β’ Add-ons, also known as ActiveX controls, browser extensions can improve your experience on a website by providing multimedia or interactive content, such as animations. β’ They help the browser program to communicate with some special type of internet files like adobe shockwave player that is needed to play videos online.
- 18. Z Browser Timeline β’ worldwideweb β’ 1st browser ever made. β’ Created by Mr. Tim Berners β Lee. β’ First version came in 1990. β’ To remove confusion, it was later named as Nexus.
- 20. Z Browser Timeline β’ Mosaic β’ Browser software was further innovated by Mr. Marc Andreessen β’ First version came in 1993 β’ In 1994, he made his company named Netscape and changed Mosaic into Netscape Navigator.
- 22. Z Browser Timeline β’ Internet Explorer β’ Microsoft licensed Mosaic from Spyglass as the basis of Internet Explorer 1.0 β’ First version came in 1995. β’ And thus browser war was started.
- 23. Z Browser Timeline β’ Internet Explorer
- 24. Z Browser Timeline β’ Opera β’ Development of Opera web browser began in 1994, when it was started as a research project at Telenor. β’ In 1995, the project branched out into a separate company named Opera Software ASA. β’ First publicly available version released in 1996.
- 26. Z Browser Timeline β’ Mozilla Firefox β’ Netscape starts the open source mozilla project. β’ It was produced to build a competitive open source browser. β’ First release was in 2004.
- 27. Z Browser Timeline β’ Mozilla Firefox
- 28. Z Browser Timeline β’ Safari β’ Until 1997, Apple Macintosh computers were shipped with the Netscape Navigator. β’ Later for Mac OS, internet explorer was used as a default browser. β’ In January 7, 2013 at San Francisco, Steve Jobs announced Safari.
- 30. Z Browser Timeline β’ Chrome β’ A free web browser developed by Google. β’ It uses the same engine which is used by Appleβs Safari. E.g. Web Kit. β’ It was first released as a beta version for Microsoft Windows in September 2, 2008.
- 32. Z Information Retrieval β’ What is a Search Engine? β’ Software that enables users to search the internet or intranet using keywords. β’ A program that acts as a catalogue for the internet or intranet.
- 33. Z Information Retrieval β’ What is a Search Engine? β’A web search tool that automatically visits websites (using crawlers), record and indexes them within its database, and generates results based on a userβs criteria.
- 34. Z Information Retrieval β’Popular Search Engines:
- 35. Z Information Retrieval β’ How do they work? β’ Web Crawling β’ Automated βSpiderβ that follows links and then analyses content in pages to determine what should be indexed.
- 36. Z Information Retrieval β’ How do they work? β’ Indexing β’ Data about web pages are stored in an index database for use in later queries. Some search engines, such as Google, store all part of the source page (referred to as a cache) as well as information about the web pages.
- 37. Z Information Retrieval β’ How do they work? β’ Searching & Results β’ The engine looks up the index and provides a listing of best-matching web pages according to its criteria. The usefulness of a search engine depends on the relevance of the result set it gives back.
- 38. Z Information Retrieval β’ When I search, I donβt get good resultsβ¦ β’ Four possible causes: 1. No Content 2. Bad Search Phrases 3. Bad Search Engine 4. Bad Content
- 39. Z Information Retrieval β’ When I search, I donβt get good resultsβ¦ β’ No Content β’ There is no content that matches your search query.
- 40. Z Information Retrieval β’ When I search, I donβt get good resultsβ¦ β’ Bad Search Query β’ You are putting in really bad search phrases.
- 41. Z Information Retrieval β’ When I search, I donβt get good resultsβ¦ β’ Bad Search Engine β’ The search engine isnβt very good, or isnβt searching the content that it should be.
- 42. Z Information Retrieval β’ When I search, I donβt get good resultsβ¦ β’ Bad Content β’ The content that you want exists, but the metadata and text within the page is not optimised for a search engine.
- 43. Z Google β’ Verb βgoogleβ has become synonymous with searching for information on the web. β’ Has been the most popular search engine in the last few years. β’ Has raised the bar on search quality. β’ Is innovative and dynamic.
- 44. Z Google
- 45. Z Yahoo! β’ Synonymous with the dot-com boom, probably the best known brand on the web. β’ Started off as a web directory service in 1994, acquired leading search engine technology in 2003. β’ Has very strong advertising and e-commerce partners.
- 46. Z Yahoo!
- 47. Z Live Search / MSN Search β’ Synonymous with PC Software. β’ Remember its victory in the browser wars with Netscape. β’ Developed its own search engine technology only recently, officially launched in Feb. 2005. β’ May link web search into its next version of Windows.
- 48. Z Live Search / MSN Search
- 49. Z Lycos! β’ One of the pioneers of the field. β’ Introduced innovations that inspired the creation of Google.
- 50. Z Ask Jeeves β’ Specializes in natural language question answering. β’ Search driven by Teoma Search Engine.
- 51. Z Letβs call it a day, Thank you!
Editor's Notes
- #2: References: http://grosskurth.ca/papers/browser-refarch.pdf
- #25: Telenor is a telecommunications company based in Norway.
- #26: http://www.slideshare.net/darpan1118/web-browserpp-ts?related=6
- #27: Telenor is a telecommunications company based in Norway.
- #29: Telenor is a telecommunications company based in Norway.
- #30: Telenor is a telecommunications company based in Norway.
- #31: Telenor is a telecommunications company based in Norway.
- #33: Telenor is a telecommunications company based in Norway.
- #34: Telenor is a telecommunications company based in Norway.
- #35: Telenor is a telecommunications company based in Norway.
- #36: Telenor is a telecommunications company based in Norway.
- #37: Telenor is a telecommunications company based in Norway.
- #38: Telenor is a telecommunications company based in Norway.
- #39: Telenor is a telecommunications company based in Norway.
- #40: Telenor is a telecommunications company based in Norway.
- #41: Telenor is a telecommunications company based in Norway.
- #42: Telenor is a telecommunications company based in Norway.
- #43: Telenor is a telecommunications company based in Norway.
- #44: Telenor is a telecommunications company based in Norway.
- #45: Telenor is a telecommunications company based in Norway.
- #46: Telenor is a telecommunications company based in Norway.
- #47: Telenor is a telecommunications company based in Norway.
- #48: Telenor is a telecommunications company based in Norway.
- #49: Telenor is a telecommunications company based in Norway.
- #50: Telenor is a telecommunications company based in Norway.
- #51: https://www.youtube.com/watch?v=8RLuPHl04Sc
- #52: https://www.youtube.com/watch?v=AhrB5ZZXnjM