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These standards are supplementary to, and should be used in conjunction with American Standard Y32.2, Graphical Symbols for Electrical Diagrams. The following are some points of general philosophy underlying their development:1. The symbol structure should reflect the past, i.e., the symbols should, within a logical framework, revert in their simplest forms to those commonly in present case.2. The symbol structure should look to the future, i.e. it should be capable of extension to the many new semiconductor devices that may become available.3. The symbol structure should indicate physical properties when this is possible without over complication.Section 2 illustrates the application of the ancillary symbols of Section 1 to a variety of semiconductor devices. For Methods of Test and Letter Symbols for Semiconductor Devices, see AIEE Standard No. 425.
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Symbols to inform people about the presence of potentially hazardous levels of radiofrequency energy or the presence of contact current hazards in the frequency range of 3 kHz to 300 GHz are specified in this standard. Guidance is given about how these symbols should be used on warning signs and labels.
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The interpretive science of semiotics offers powerful analytical tools for the application of many disciplines to the study of perception. Semiotics is the study of signs, and as such, is of relevance to a wide spectrum of scholars and professionals, including social scientists, psychologists, artists, graphic designers, and students of literature. Semiosis - the production and interpretation of linguistic and visual signs - is innate to human beings of all societies. From the simplest of hand gestures to the most complex diagrams and charts, the sign is key to the communication of ideas. Thomas A. Sebeok examines, in an engaging, readable style, how the sign mediates between bodily experience and abstract thought. This updated second edition of Signs combines some of Sebeok's most important essays with a new general introduction, introductory passages at the outset of each chapter, a glossary, and brief biographies of the major semioticians. From an overview of the discipline to a more detailed exploration of sign categories, the author powerfully demonstrates the co-dependency of verbal and non-verbal communication. Aimed primarily at undergraduate and graduate students, this engaging book also has plenty to offer any general reader who is interested in exploring and analyzing the complex sign systems we so often take for granted.
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