- Hypermedia is a combination of media whose locations are linked electronically to provide an easy way to navigate between the information.
- The information is stored using a set of documents that may contain text, images, audio, video or executable programs.
- Each document is independent, and information is retrieved using hypertext.
- Hypertext is a system that allows documents to be cross-linked in such a way that the user can move from one document to another by clicking on a link.
- A link, or hyperlink, is indicated by a highlighted item (usually an underlined word or a graphic) that allows the electronic connection.
- The author of the hypertext must specify the location of the information accessed by each link.
- If another computer is the destination of the link, that computer is called a node.
- The most well-known application of hypermedia and hypertext is the World Wide Web. On the Web, each document is accessed through its uniform resource locator (URL).
- NODE has different meanings:
- In general usage: a node means a point where links are connected
- In computer network: a node is any device connected (linked) to the network
- In Hypertext terms: a node is usually some block or unit of information - perhaps a webpage, a simple block of text, a video sequence or some richer information that combines many media types. The user follows a link embedded within a node and is taken to another node; this new node may contain links to further nodes.
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