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เนื้อหาย่อ : workbook provides a variety of drafting ex- suitable for electronics courses in junior trade schools, and technical institutes. The arranged so that selected topics may be d at each stage of instruction: to supple- cuit theory, for notes and technical reports, gart of laboratory design and construction Although it is intended as a companion tronic Drafting (Englewood Cliffs, N. J.: e-Hall, Inc., 1962) for classroom use, this may be used with other textbooks and b ho wishes to study independently. ypes of drawings required for the electron- stry, their functions, and typical circum- of use are reviewed in the introduction. A of drafting skills and methods is included, gestions for using the exercises. Fore the text gives working data and specific dons, supplemented in some instances by il- ercises are grouped in sections and ar- order of increasing complexity. The es- features of each topic are presented in the mples, with controlling data given in the s as a guide toward acceptable solutions. is pursued further in the more advanced with the introduction of variations and ies which simulate practical situations. ercises call for the proper organization of kinds of data, the resolution of layout and roblems, and regard for those details which ize a professional drawing. an half the material is directly concerned cal and symbolic drawings. Such topics symbols, reference designations, cod- ing methods, circuit analysis, and stage layouts are included in these exercises. These topics range from basic symbols, simple stage layouts, and elementary circuits to multistage drawings and examples of schematic and connection diagrams representative of complete units and systems. Other related topics, such as lettering and cod- ng, multiview drawings, mechanical assemb. pictorial views, charts and graphs, are included in the relevant sections. Freehand drawing and sketches have been made an integral part of many exercises, particularly for developing initial lay- uts and for organizing data to be used as"" ing copy."' Useful checking routines have been in- troduced in many instances. Conventional practices and current standards have been adhered to, and a list of applicable stand- ards and references is furnished for each section. Numerous references to "Electronic Drafting" have en given to save student time and to promote ther study. Modular principles have been employed throughout in the development of all symbolic dia- grams. A number of exercises contain alternatives, of which present opportunities to apply specialized techniques. These features have been introduced to timulate initiative, to encourage further practi and to illustrate some of the methods and applica- tions to be found in commercial drafti Finally, it is a pleasure to express my grat and appreciation to my wife May for her help in preparing the manuscript and for her assistance throughout the work.