Basic Web Concepts - Learn about Web Browsers and Internet Connections

BASIC WEB CONCEPTS 2 ACCESSING THE WEB ▪ The most common means of accessing the internet is through the use of telephone lines. ▪ They existed before computer communications and are widely available worldwide. ▪ Although its original intent was for voice communication, it...

BASIC WEB CONCEPTS 2 ACCESSING THE WEB ▪ The most common means of accessing the internet is through the use of telephone lines. ▪ They existed before computer communications and are widely available worldwide. ▪ Although its original intent was for voice communication, it has now become a vital part of computer communications. Historical World Wide Web logo ▪ Other methods of internet connectivity have been designed by Robert introduced to complement the telephone lines. Cailliau ▪ Some examples are; by the use of cables and wireless communications. 3  ACCESSING THE WEB ▪ Robert Cailliau (born 26 January 1947) is a Belgian informatics engineer, computer scientist and author who proposed the first (pre- www) hypertext system for CERN in 1987 and collaborated with Tim Berners-Lee on the World Wide Web from before it got its name. ▪ He designed the historical logo of the WWW, organized the first International World Wide Web Conference at CERN in 1994 and helped transfer Web development from CERN to the global Web consortium in 1995. ▪ Together with Dr. James Gillies, Cailliau wrote How the Web Was Born, the first book-length account of the origins of the World Wide Web. 4  ACCESSING THE WEB ▪ Dial-Up Connection – is connecting to the internet using telephone lines. ▪ The method of connection is done like making a call over the telephone line with the aid of modem (modulator-demodulator). ▪ One disadvantage of this type is the slow data transmission, and the telephone could not be utilized for voice communication while connected to the internet. 5  ACCESSING THE WEB ▪ DSL – or digital subscriber line is also a method of connecting to the internet using telephone line but provides both data and voice communication, meaning you can use it both to talk and transmit data at the same time unlike the dial-up connection. ▪ DSL data transmission is several times faster and is more reliable compared to the dial-up connection. 6  ACCESSING THE WEB ▪ Cable Internet– is online connection to the web by the use of cable lines already used by the cable television (TV) providers.. ▪ Cable lines can carry TV and data signals faster since they are dedicated line originally intended for TV. ▪ They can transmit data at a faster rate and are available immediately to home and office users with existing cable TV services. 7  ACCESSING THE WEB ▪ Wireless Internet– is internet connection provided by wireless service providers (WSP) wherein wireless enabled computers and gadgets can access to. ▪ This service is very convenient since you can access the internet anywhere as long as the area has a wireless signal just like the ones used by the cellular phone providers. 8  ACCESSING THE WEB ▪ Dedicated Line – A dedicated line is a telecommunications path between two points that is available 24 hours a day for use by a designated user (individual or company). ▪ It is not shared in common among multiple users as dial-up lines are. ▪ A dedicated line can be a physical path owned by the user or rented from a telephone company, in which case it is called a leased line. A synonym is nonswitched line (as opposed to a switched or dial-up line). 9 WEB BROWSERS ▪ A WEB SITE must be tested and viewed using the browsers that are commonly used by users worldwide that way you will be assured that your web site will work in the majority of available browsers out there. ▪ This test is important because not all browsers treat some codes the same way. ▪ Each browser has its own set of default setting for fonts, background color and so on and the user may also want to modify these settings to their particular needs or viewing preferences. 10 WEB BROWSER USER INTERFACE ▪ Majority of the web browsers available have the following user interface features in common. 3 5 4 1 2 8 6 7 11 WEB BROWSER USER INTERFACE Web Browser Elements Name Function 1. Home Button Usually represented by a house icon to return to the user’s home page 2. Address Bar To input the Uniform Resource Identifier (URI) also known as Uniform Resource location (URL) 3. Back and forward Buttons As represented by left and right arrows, to go back to the previous page and forward to the next 4. Refresh or reload Button To reload the current page 5. Stop button To cancel loading the current page 6. Search bar As a means to type in topics and terms in search engine 7. Status To display progress of the page being loaded 8. Page Zooming Capability to view a page closer or further 12  KINDS OF WEB BROWSERS ▪ Internet Explorer Original author(s) ▪ (formerly Microsoft Internet Explorer and Windows Thomas Reardon Internet Explorer, commonly abbreviated IE or MSIE) Developer(s) Microsoft is a discontinued series of graphical web Initial release browsers developed by Microsoft and included in August 16, 1995; 28 years ago the Microsoft Windows line of operating systems, starting in 1995. ▪ New feature development for the browser was discontinued in 2016 in favor of new browser Microsoft Edge. ▪ Since Internet Explorer is a Windows component and is included in long-term lifecycle versions of Windows such as Windows Server 2019, it will continue to receive security updates until at least 2029. 13  KINDS OF WEB BROWSERS ▪ Mozilla Firefox ▪ or simply Firefox, is a free and open-source web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. ▪ Firefox uses the Gecko rendering engine to display web pages. ▪ In 2017, Firefox began incorporating new technology under the code name Quantum to promote parallelism and a more intuitive user interface. ▪ Firefox is available for Windows 7 or Windows 10, macOS, and Linux. Its Developer(s) unofficial ports are available for various Unix and Unix-like operating Mozilla Foundation and systems including FreeBSD,OpenBSD,NetBSD, illumos, and Solaris Unix. its contributors Mozilla Corporation ▪ Firefox is also available for Android and iOS. Initial release September 23, ▪ However, the iOS version uses the WebKit layout engine instead of Gecko 2002; 21 years ago due to platform requirements, as with all other iOS web browsers. ▪ An optimized version of Firefox is also available on the Amazon Fire TV, as one of the two main browsers available with Amazon's Silk Browser. 14  KINDS OF WEB BROWSERS ▪ Safari ▪ is a graphical web browser developed by Apple Inc., based primarily on open-source software properties notably including WebKit. ▪ It was first introduced on Mac OS X Panther in 2003 and was later incorporated to the iPhone and iPod Touch with iPhone OS 1 in 2007. Developer(s) ▪ The Safari 1 was released on June 23, 2003, and latest version Apple Inc. Safari 4 was released last June 8, 2009. Initial release January 7, 2003; 20 years ago ▪ Safari is the third most popular web browser with a share of just over 4% of the worldwide users as of September 2009. ▪ The software was currently supported on macOS, iOS, proceeding against a former Windows version offered from 2007 to 2012. 15  KINDS OF WEB BROWSERS ▪ Google Chrome ▪ is a freeware web browser developed by Google LLC. ▪ The development process is split into different "release channels", each working on a build in a separate stage of development. ▪ Chrome provides four channels: Stable, Beta, Dev, and Canary. ▪ The google chrome was released to the public last December 11, 2008, and latest version 3 was release September 15, 2009. Platform Version Release Date Chrome on macOS 109.0.5414.119 2023-01-25 Chrome on Linux 109.0.5414.119 2023-01-25 Chrome on Android 109.0.5414.117 2023-01-25 Chrome on iOS 109.0.5414.112 2023-01-24 16  KINDS OF WEB BROWSERS ▪ Opera ▪ Opera is a multi-platform web browser developed by Opera Software. Opera is nowadays a Chromium- based browser. It distinguishes itself from other browsers through its user interface and other features. ▪ Opera was initially released in April 1995, making it one of the oldest desktop web browsers still actively developed today. It was a commercial software for the Developer(s) Opera Software first ten years and had its own Initial release April 1995; proprietary Presto layout engine. In 2013, Opera 28 years ago switched from the The company released a gaming- oriented version of the browser called Opera GX in 2019. 17  KINDS OF WEB BROWSERS ▪ Netscape ▪ Netscape was the first company to attempt to capitalize on the emerging World Wide Web. ▪ It was founded under the name Mosaic Communications Corporation on April 4, 1994, the brainchild of Jim Clark who had recruited Marc Andreessen as co-founder and Kleiner Perkins as Founded April 4, 1994 investors. (29 years ago) in Mountain View, California ▪ The first meeting between Clark and Andreessen was Founders Marc Andreessen never truly about a software or service like Netscape, but James H. Clark more about a product that was similar to Nintendo. 18  KINDS OF WEB BROWSERS ▪ Flock Developer(s) Flock, Inc. ▪ Is a new web browser that supports Initial release April 11, 2005; 18 Microsoft windows, Mac OS X and Linux years ago operating system and is based on Mozilla’s Firefox codebase. ▪ It is one of the newer web browsers and flock version 2.5 was released on May 19, 2009. flock supports social networking and web 2.0 facilities and services including Facebook, myspace, twitter, You tube ang many others. 19 20