ANSI IEEE 91A 91-1991 IEEE Standard for Graphic Symbols for Logic Functions.pdf

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1、ANSI/IEEE Std 91-1984IEEE Standard Graphic Symbols for Logic Functions (Including and incorporating IEEE Std 91a-1991, Supplement to IEEE Standard Graphic Symbols for Logic Functions)SponsorIEEE Standards Coordinating Committee 11,Graphic Symbols and DesignationsANSI/IEEE Std 91-1984Approved 17 Sept

2、ember 1981, IEEE Standards BoardApproved 26 October 1982, American National Standards InstituteAdopted for Mandatory Use 10 May 1984 Adopted U.S. Department of Defense (DoD)ANSI/IEEE Std 91a-1991Approved 27 June 1991 IEEE Standards BoardApproved 3 June 1994 American National Standards InstituteAdopt

3、ed for Mandatory Use 1 July 1991 U.S. Department of Defense (DoD)Abstract: Graphic symbols for representing logic functions or physical devices capable of carrying out logicfunctions are presented. Descriptions of logic functions, the graphic representation of these functions, andexamples of their a

4、pplications are provided. The symbols are presented in the context of electricalapplications, but most may also be applied to nonelectrical systems (for example, pneumatic, hydraulic, ormechanical). The supplement provided additional internationally approved graphic symbols and madecorrections as ne

5、eded to IEEE Std 91-1984.Keywords: dependency notation, industry standards, logic diagrams, logic function, logic symbols, militarystandardsThe Institute of Electrical and Electronics Engineers, Inc.345 East 47th Street, New York, NY 10017-2394, USACopyright 1996 by the Institute of Electrical and E

6、lectronics Engineers, Inc.All rights reserved. Published 1996. Printed in the United States of AmericaNo part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without theprior written permission of the publisher.ANSI/IEEE Std 91a-1991Recognized as an

7、American National Standard (ANSI)ANSI/IEEE Std 91-198410 May 1984(SupersedingANSI Y32.14-1973IEEE Std 91-1973)Acceptance NoticeThis non-government document was adopted on 10 May 1984, and is approved for use by the Department of Defense(DoD). The IEEE has furnished the clearances required by existin

8、g regulations. Copies of the document are stocked atthe Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094 for issue toDoD activities only. Other Government activities, contractors, private concerns, or other requestors must obtain thedocument from:The Ins

9、titute of Electrical and Electronics Engineers, Inc.345 East 47th StreetNew York, NY 10017-2394 USATitle of Document: IEEE Standard Graphic Symbols for Logic FunctionsDocument No: ANSI/IEEE Std 91-1984Date of Specific Issue Adopted: 9 June 1984Releasing Industry Group: The Institute of Electrical an

10、d Electronics Engineers, Inc.Custodians: Military Coordinating Activity:ArmyAR ArmyARNavySHAir Force13 (Project DRPR0231)Review Activities:ArmyAV, MI, AM CR, ERNavyOS, ASAir Force15, 17, 11User Activities:ArmyATNavyMCNOTICE: When reaffirmation, amendment, revision, or cancellation of this standard i

11、s initially proposed, the industrygroup responsible for this standard shall inform the military coordinating activity of the proposed change and requestparticipation.NOTICE OF ADOPTIONADOPTION NOTICE 11 JULY 1991IEEE Std 91a-199127 JUNE 1991The Institute of Electrical and Electronics Engineers, Inc.

12、, IEEE Std 91a-1991, was adopted on 1 July, 1991 and isapproved for use by the Department of Defense (DoD). Copies of this document are stocked at the StandardizationDocuments Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094 for issue to DoD activitiesonly. Other Government activ

13、ities, contractors, private concerns, or other requestors must obtain the document from:The Institute of Electrical and Electronics Engineers, Inc.345 East 47th StreetNew York, NY 10017Title of Document: Supplement to IEEE Standard Graphic Symbols for Logic FunctionsDate of Specific Issue Adopted: 2

14、7 June 1991Releasing Industry Group: The Institute of Electrical and Electronics Engineers, Inc.Custodians: Military Coordinating Activity:ArmyAR ArmyARNavyOSAir Force13 (Project DRPR0314)Review Activities:ArmyAT, AV, CR, ER, MINavyAS, EC, MC, SHAir Force11, 13, 15, 16, 17, 99DLADH, ESNSANSUser Acti

15、vities:ArmyATAMSC N/A AREA DRPRDISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.IEEE Standards documents are developed within the IEEE Societies and the Standards Coordinating Committees ofthe IEEE Standards Board. Members of the committees serve voluntarily and witho

16、ut compensation. They are notnecessarily members of the Institute. The standards developed within IEEE represent a consensus of the broadexpertise on the subject within the Institute as well as those activities outside of IEEE that have expressed an interestin participating in the development of the

17、 standard.Use of an IEEE Standard is wholly voluntary. The existence of an IEEE Standard does not imply that there are no otherways to produce, test, measure, purchase, market, or provide other goods and services related to the scope of the IEEEStandard. Furthermore, the viewpoint expressed at the t

18、ime a standard is approved and issued is subject to changebrought about through developments in the state of the art and comments received from users of the standard. EveryIEEE Standard is subjected to review at least every five years for revision or reaffirmation. When a document is morethan five y

19、ears old and has not been reaffirmed, it is reasonable to conclude that its contents, although still of somevalue, do not wholly reflect the present state of the art. Users are cautioned to check to determine that they have thelatest edition of any IEEE Standard.Comments for revision of IEEE Standar

20、ds are welcome from any interested party, regardless of membershipaffiliation with IEEE. Suggestions for changes in documents should be in the form of a proposed change of text,together with appropriate supporting comments.Interpretations: Occasionally questions may arise regarding the meaning of po

21、rtions of standards as they relate tospecific applications. When the need for interpretations is brought to the attention of IEEE, the Institute will initiateaction to prepare appropriate responses. Since IEEE Standards represent a consensus of all concerned interests, it isimportant to ensure that

22、any interpretation has also received the concurrence of a balance of interests. For this reason,IEEE and the members of its societies and Standards Coordinating Committees are not able to provide an instantresponse to interpretation requests except in those cases where the matter has previously rece

23、ived formalconsideration.Comments on standards and requests for interpretations should be addressed to:Secretary, IEEE Standards Board445 Hoes LaneP.O. Box 1331Piscataway, NJ 08855-1331USAAuthorization to photocopy portions of any individual standard for internal or personal use is granted by the In

24、stituteof Electrical and Electronics Engineers, Inc., provided that the appropriate fee is paid to Copyright Clearance Center.To arrange for payment of licensing fee, please contact Copyright Clearance Center, Customer Service, 222Rosewood Drive, Danvers, MA 01923 USA; (508) 750-8400. Permission to

25、photocopy portions of any individualstandard for educational classroom use can also be obtained through the Copyright Clearance Center.Note: Attention is called to the possibility that implementation of this standard may require use of subject mattercovered by patent rights. By publication of this s

26、tandard, no position is taken with respect to the existence orvalidity of any patent rights in connection therewith. The IEEE shall not be responsible for identifying all patentsfor which a license may be required by an IEEE standard or for conducting inquiries into the legal validity orscope of tho

27、se patents that are brought to its attention.Introduction(This introduction is not part of IEEE Std 91-1984, IEEE Standard Graphic Symbols for Logic Functions, or of IEEE Std 91a-1991,Supplement to IEEE Std 91-1984.)Two standards are included in this document: IEEE Std 91-1984, IEEE Standard Graphic

28、 Symbols for LogicFunctions, and IEEE Std 91a-1991, Supplement to IEEE Std 91-1984. In this edition (published in 1996), the twostandards have been merged to make it more convenient for the user.The following sections of the original IEEE Std 91-1984 were extensively revised and replaced by IEEE Std

29、 91a-1991: Pictorial Table of ContentsTable of ContentsSection 6: Symbols for Highly Complex FunctionsAppendix A: Recommended Symbol ProportionsAppendix D: Integrated Circuits Used as Examples, Commercial Part Numbers vs. Symbol NumbersIndexNumerous other revisions to IEEE Std 91-1984 in Sections 1

30、through 5 were made. The new Table of Contents and thenew Index indicate specifically where revisions were made. Further, change bars marked in the outside marginsindicate the locations of significant changes. Each standard has a unique foreword, included below.IEEE Std 91-1984 forewordThis standard

31、 defines an international language by which it is possible to determine the functional behavior of a logiccircuit as described on a logic or circuit diagram with minimal reference to supporting documentation. Like naturallanguages, the language set forth in this standard has been designed to allow a

32、 single concept to be expressed in oneof several different ways, according to the demands of a particular situation. Consequently, this standard does notattempt, nor intend to establish single correct symbols for particular devices. A symbol appropriate for one applicationof a device may not be appr

33、opriate for another.The contributors to this standard represent a broad range of institutions, technologies, and documentation needs. Theyinclude industrial, governmental, and educational organizations, producers and consumers of devices and equipment,users and non-users of computer-aided design and

34、 drafting, and a considerable range of aesthetic preferences. That aconsensus of such diverse interests could be achieved in producing this standard is indicative of not only the utility ofthe approach, but more importantly, of the increasing need among designers and maintainers of digital systems f

35、or acommon and more nearly complete symbolic language.This revision is the result of a continuing activity to arrive at a useful notation to permit free interchange ofinformation on the design of binary-operated controls and systems. It is the latest step in a program that began in 1956within the IE

36、EE to develop a comprehensive single standard, consistent with ongoing developments in technology andlogic symbology, from several ad hoc, industry, military, and international standards. In 1960, an ad hoc group onlogic diagram graphic symbols was formed within the American National Standards Insti

37、tute in order to develop adraft American Standard. In 1961, this committee became a permanent subcommittee, Y32.14, of the GraphicSymbols Committee, Y32, under the cosecretariat of ASME and IEEE. Its work resulted in the publication of IEEEStd 91-1962 (ANSI Y32.14-1962 ), adopted in 1965 by the US N

38、avy. The subcommittee was reorganized in 1969 toprepare a new draft standard that would have broader acceptance and be in accord with the developments within theInternational Electrotechnical Commission (IEC). ANSI/IEEE Std 91-1973 (Y32.14-1973) subsequently receivedapproval from ANSI, and the US De

39、partment of Defense, and was substantially compatible with IEC Pub 117-15,Recommended Graphical Symbols: Binary Logic Elements. Since 1977 the preparing committee, IEEE SCC 11.9, hasworked closely with IEC Technical Committee 3 to prepare major new revisions of this standard and IEC Pub 617,Part 12

40、(the successor to Pub 117, Part 15). The aim was for a US standard that would be mutually compatible with theIEC standard, broadly acceptable, and that would provide notation or guidelines by which any SSI through VLSIvidevice might be usefully and accurately represented. Fourteen drafts of this doc

41、ument were prepared in parallel withdrafts of the new IEC document by an ad hoc working group of SCC 11.9 before the preparers and reviewers believedthat these goals had been met.Symbology, such as language and technology, will continue to evolve, and IEEE SCC 11.9 will continue to work withIEC TC3

42、to update logic symbol standards as future needs dictate. Suggestions for improvement of this standard arewelcomed. They should be addressed to:SecretaryIEEE Standards BoardThe Institute of Electrical and Electronics Engineers, Inc.345 East 47th StreetNew York, NY 10017-2394 USAWhen this standard wa

43、s approved, the IEEE Standards Coordinating Committee on Graphic Symbols andDesignations, Subcommittee SC 11.9 on Logic Symbols, had the following membership:Thomas R. Smith, Chair*Charles J. AndrascoRichard R. BartaM. Paul Chinitz*Edwin D. EdwardsPhilip H. Enslow, Jr.Charles A. FrickeArthur C. Gann

44、ettJames J. GeorgeTommy J. GibbonsEdward J. Harrington*Verle W. HarrisGordon A. Knapp*Joseph Kochanski*George E. LemieuxFred A. Mann*Rollin P. MayerMark Mrozowski*Conrad R. Muller*John B. Peatman*Richard W. Pinger*V. Tom Rhyne*John P. Russell* *Henry H. SeamanThomas R. Smith*Robert TobiasJames L. Va

45、rgo*Frank B. Wahl, Jr.*R. J. YuhasUS Air Force Logistics Command LOLME (Robert C. Gardner)US Army Armament Research and Development Command DRDAR-TST-S (M. E. Taylor)*Member of ad hoc working groupResigned*Secretary, September 1979 to April 1980; prepared all drafts through 1981Head of delegation to

46、 IEC TC3/SC3A/WG2 on Logic SymbolsThe IEEE Standards Coordinating Committee on Graphic Symbols and Designations SCC 11 had the followingmembership:C. A. Fricke, Chair C.R. Muller, Secretary Robert B. Angus, Jr.John M. CarrollGordon A. KnappJohn B. PeatmanJ. William SiefertThomas R. SmithRoger M. Ste

47、rnLeter H. WarrenSteven A. WassermanResignedviiAt the time the standard was approved on September 17, 1981, the IEEE Standards Board had the followingmembership:Irvin N. Howell, Jr., Chair Irving Kolodny, Vice Chair Sava I. Sherr, Secretary G. Y. R. AllenJ. J. ArchambaultJames H. BeallJohn T. Boettg

48、erEdward ChelottiEdward J. CohenLen S. CoreyJay ForsterKurt GreeneLoering M. JohnsonJoseph L. KoepfingerJohn E. MayDonald T. Michael*J. P. RiganatiFrank L. RosaRobert W. SeelbachJay A. StewartVirginius N. Vaughan, Jr.Art WallRobert E. Weiler*Member emeritusIEEE Std 91a-1991 forewordIEEE Std 91-1991

49、provides a way to describe a single logic function with a symbol. The symbols that result from usingIEEE Std 91-1984 have sometimes been called “the new logic symbols,” despite the fact that one can still finddistinctive-shape AND and OR gates, J and K inputs to flip-flops, and most other time-honore

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