Multimedia refers to the ability to simultaneously access editing, processing, storage and what

Multimedia refers to technology that can simultaneously acquire, process, edit, store and display two or more different types of information media. This technology enables users to communicate with computers in real time through multiple senses. Multimedia technology uses computers to digitize media information such as text materials, image materials, audio and video, and integrates them into interactive interfaces, giving computers the ability to interactively display different media forms.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

"Multimedia" refers to technology that can simultaneously acquire, process, edit, store and display two or more different types of information media.

Types and characteristics of multimedia information:

(1) Text

Text is a form of information expressed in text and various special symbols. It is a real-life The most commonly used method of information storage and transmission. Using text to express information gives people ample room for imagination. It is mainly used for descriptive representation of knowledge, such as elaborating concepts, definitions, principles and issues, and displaying titles, menus, etc.

(2) Image

Image is one of the most important forms of information expression in multimedia software. It is a key factor in determining the visual effect of a multimedia software.

(3) Animation

Animation uses the persistence characteristics of human vision to quickly play a series of graphic images with continuous motion changes, including the scaling, rotation, transformation, fade-in and fade-out of the picture, etc. Special effect. Abstract content can be visualized through animation, making many difficult-to-understand teaching content vivid and interesting. Reasonable use of animation can achieve twice the result with half the effort.

(4) Sound

Sound is one of the most convenient and familiar ways for people to convey information and communicate feelings. In multimedia courseware, sounds can be divided into three categories: explanation, music, and effects according to their expression forms.

(5) Video images

Video images have temporal sequence and rich information connotation, and are often used to explain the development process of things. Video is very similar to the movies and TV we are familiar with. It is full of sound and color and plays an important role in multimedia.

Multimedia technology uses computers to store and manage various information such as language, text, data, audio, video, etc., allowing users to communicate with computers through multiple senses in real-time. Communication technology. The content displayed and carried by multimedia technology is actually the product of computer technology.

What we call media refers to the carrier that carries and transmits some kind of information or material. It can be divided into five major categories: sensory media, presentation media, performance media, storage media and transmission media. In the field of computers, media are mainly carriers for transmitting and storing information. The transmitted information includes language, data, video, audio, etc.; the storage carriers include hard drives, floppy disks, tapes, disks, optical disks, etc. Multimedia scientifically integrates the functions of various media to provide users with multiple forms of information display, making the information more intuitive and vivid.

Multimedia technology uses computers to digitize media information such as text materials, image materials, audio and video, and integrates them into interactive interfaces, giving computers the ability to interactively display different media forms.

Multimedia technology has the following main features:

(1) Integration. It can obtain, store, organize and synthesize information in a unified manner through multiple channels.

(2) Controlled multimedia technology is computer-centered, comprehensively processes and controls multimedia information, and displays it in a variety of media forms according to people's requirements, while acting on people's multiple senses.

(3) Interactivity Interactivity is one of the main features that distinguish multimedia applications from traditional information exchange media. Traditional information exchange media can only disseminate information one-way and passively, while multimedia technology can realize people's active selection and control of information.

(4) Non-linearity The non-linear characteristics of multimedia technology will change people’s traditional sequential reading and writing model. In the past, most people read and write using the framework of chapters, sections, and pages to acquire knowledge step by step. However, multimedia technology will use the method of Hyper Text Link to present content in a more flexible and changing way. to readers.

(5) Real-time performance When the user gives an operation command, the corresponding multimedia information can be controlled in real time.

(6) Interactivity, which can form an interaction between people and machines, people and people and machines, an operating environment and immersive scenes for mutual communication, and people can control them according to their needs. Human-machine communication is the biggest feature of multimedia.

(7) Convenience of information use Users can use information according to their own needs, interests, task requirements, preferences and cognitive characteristics, and use any form of information expression such as pictures, text, and sounds.

(8) Dynamic nature of information structure "Multimedia is a book that can never be finished". Users can reorganize information according to their own purposes and cognitive characteristics, add, delete or modify nodes, and re-establish Link.

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