answers1

ANSWERS TO END OF CHAPTER QUESTIONS

1. See Glossary.

2. Bit-mapped graphics describe a collection of pixels to the computer. While they provide optimum control over shading and texture, these graphics are not ideal for smooth printing, scaling, and any other distortion operations. They are also large files that require a large amount of disk space for storage. Object-oriented graphics describe a series of lines and shapes. They are smaller, fully scalable, and print cleanly.

3. The quality of bit-mapped images are limited by color depth (bit depth)&endash;the number of colors that can be displayed in a single pixel&endash;and resolution&endash;the density of the pixels. As color depth and resolution are increased, the size of the image file increases, requiring more disk space for storage.

4. Digital photographs are stored as bit-mapped images, as are bit-mapped paintings.

5. Architectural design, designing auto parts, creating 3-D animations.

6. Image compression allows video files to be stored more easily since these files are generally very large, even for short video clips.

7. Digitized sounds allow you to modify or edit sound files that you wish to add to a multimedia document. CD audio is not editable; it is listen-only, since the source is an audio CD rather than a digitized audio computer file. MIDI allows you to record and digitize sound from a number of musical instrument sources.

8. Hypertext and hypermedia allow a nonlinear path to be created through a given document or set of documents. Hypertext allows users to create any number of "branches" through links. These links allow users to navigate through a document in any manner that they choose, viewing only information of interest to them, rather than being restricted to a predefined linear path.

9. Online help files and encyclopedias frequently make use of hypermedia, allowing you to quickly jump to topics of interest to you. On the World Wide Web, hypermedia links are the primary navigation tool, providing links between related pages and documents.

10.It's easy to get lost while navigating a hypermedia document. With a conventional document, you know that information you've already read is on the previous pages, but with a hypermedia document, it's sometimes tough to remember where you found useful information. Hypermedia documents also sometimes fail to provide the links that the user wants, thereby failing in the idea of providing "instant" access to information.

11. Hypermedia simply refers to links between documents. Those linked documents may be text, sound, video, or graphics. So, yes, hypermedia may be used without multimedia to simply link together any number of text documents. Similarly, multimedia means the use of multiple types of media in a single document. You don't need links (hypermedia) in order to include both graphics and text in a document.

12. Presentation graphics applications are designed specifically for creating visual aids to a live presentation. These documents are not suitable "stand-alones" for communicating ideas effectively. They are intended to be accompanied by a human expanding on and explaining points displayed. Multimedia authoring software is used to design "stand-alone" interactive multimedia documents. Such software is often used to create training tools, tutorials, and other educational materials.