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200 10$aANSI/IEEE Std 991-1986 $eIEEE Standard for Logic Circuit Diagrams /$fInstitute of Electrical and Electronics Engineers
210  1$aPiscataway, NJ :$cIEEE,$d1986.
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330   $aThis standard provides guidelines for preparation of diagrams depicting logic functions. It includes definitions, requirements for assignment of logic levels, application of logic symbols, presentation techniques, and labeling requirements with typical examples. The techniques are presented in the context of electrical/electronic systems, but also may be applied to nonelectrical systems (for example, pneumatic, hydraulic, or mechanical).
517   $aANSI/IEEE Std 991-1986: IEEE Standard for Logic Circuit Diagrams. Corrected Edition
606   $aLogic circuits
615  0$aLogic circuits.
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