Internet explorer is also a very popular graphical

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Unformatted text preview: e browsers in use today. Line browsers are used on those web-client computers that only have text displaying capability. An example of a typical line browser display is given in Figure 18.1. Note that every word or phrase that is of boldface type (such as ARPANET system) represents a hypertext link. The commands at the bottom of the screen help users take advantage of the various features of the line browser. For example, a user can use the up and down arrow keys to skip to the next hypertext link, and use the right and left arrow keys to either select a link, or move backward to a previous link. Pressing the return key initiates the link that is currently selected and the browser takes the user to wherever it leads. An Introduction to the Internet <pl of 10> The Internet is a network of networks that share a common mechanism for addressing computers and a common set of communication protocols for communications between two computers on the network. It has its root in the ARPANET system. The following are the four types of basic services provided by the Internet to its users: Electronic Mail File Transfer Protocol Telnet Usenet News There are several user-friendly, tools that allow users to successfully navigate the Internet and find useful information for one's own purposes. A few of the most popular of these tools are: Gopher Archie - World Wide Web To be used as a web client, a computer needs to be loaded with a special software tool that is known as WWW browser. — press space for next page — Arrow keys: Up and Down to move. Right to follow a link; Left to go back. H>elp 0>ptions P>rint G>o M>ain screen Q>uit/=search [delete] = history list 0 Figure 18.1. A typical line browser display. Graphical Browsers Although line browsers offer full hypertext capability for Internet surfing, they have the following limitations: 1. They cannot handle multimedia data such as graphics, image, video, and sound. 2. They rely heavily on the keyboard for navigating and selecting information because a user has enter a selection number or skip from link to link by using the arrow keys of the keyboard. Graphical browsers are designed to overcome these limitations of line browsers. They are designed to take full advantage of the WWW's ability to handle all kinds of digital media such as graphics, image, video and sound. Moreover, they rely heavily on the mouse for navigating and selecting information. A user can liter...
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