Guide for the Care and Use of Laboratory Animals

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National Academies Press, 1996 - Nature - 125 pages
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Demonstrates how computers, logic controllers (PLCs) and programmable logic devices (PLDs) have in common the characteristics of being synchronous sequential systems, and differ with regard to modularity, design confidentiality and speed. The first section introduces logic controllers and makes the connection between digital electronics and PLCs. The second section is dedicated to PLDs and their use in designing PLCs. The final section considers PLCs and their applications, and PLC programming languages. Annotation copyrighted by Book News, Inc., Portland, OR

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