Minggu, 16 Oktober 2011

Chapter 6 Graphics, Digital Media, and Multimedia

Tim Berners-Lee Weaves the Web for Everybody
ü  Born in London in 1955
ü  Wanted to create an open-ended distributed hypertext system with no boundaries, so scientists everywhere could link their work together
ü  Invented the World Wide Web and gave it to all
ü  Now works at MIT
ü  Heads the World Wide Web Consortium (W3C)
Pixels: tiny dots of white, black, or color that make up images on the screen
Palette of tools mimics real-world painting tools
ü  Also contains other tools that are unique to computers
Bitmapped graphics (or raster graphics): pictures that show how the pixels are mapped on the screen
Color depth: the number of bits devoted to each pixel
Resolution: the density of the pixels
Computer-Aided Manufacturing (CAM) is the process by which data related to the product design are fed into a program that controls the manufacturing of parts.
Computer-Integrated Manufacturing (CIM) refers to the combination of CAD/CAM and is a major step toward a fully automated factory.
Modern media contains dynamic information, which is information that changes over time or in response to user input.
Ø  Animation
Ø  Desktop Video
Ø  Audio
Hypertext and Hypermedia
ü  Hypertext refers to information linked in non-sequential ways.
ü  Hypermedia combines text, numbers, graphics, animation, sound effects, music, and other media in hyperlinked documents.
Ø  Useful for on-line help files
Ø  Lets the user jump between documents all over the Internet
Today we can create or explore hypermedia documents—interactive documents that mix text, graphics, sounds, and moving images with onscreen navigation buttons—on disk and on the World Wide Web.
Multimedia computer systems make a new kind of software possible—software that uses text, graphics, animation, video, music, voice, and sound effects to communicate.
Regardless of the hardware, interactive multimedia software enables the user to control the presentation rather than just watch or listen passively.

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