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1、ANSI/IEEE Std 91-1984 IEEE Standard Graphic Symbols for Logic Functions (Including and incorporating IEEE Std 91a-1991, Supplement to IEEE Standard Graphic Symbols for Logic Functions) Sponsor IEEE Standards Coordinating Committee 11, Graphic Symbols and Designations ANSI/IEEE Std 91-1984 Approved 1
2、7 September 1981, IEEE Standards Board Approved 26 October 1982, American National Standards Institute Adopted for Mandatory Use 10 May 1984 Adopted U.S. Department of Defense (DoD) ANSI/IEEE Std 91a-1991 Approved 27 June 1991 IEEE Standards Board Approved 3 June 1994 American National Standards Ins
3、titute Adopted 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 logic functions are presented. Descriptions of logic functions, the graphic representation of these functions, and exam
4、ples of their applications are provided. The symbols are presented in the context of electrical applications, but most may also be applied to nonelectrical systems (for example, pneumatic, hydraulic, or mechanical). The supplement provided additional internationally approved graphic symbols and made
5、 corrections as needed to IEEE Std 91-1984. Keywords: dependency notation, industry standards, logic diagrams, logic function, logic symbols, military standards The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street, New York, NY 10017-2394, USA Copyright 1996 by the Instit
6、ute of Electrical and Electronics Engineers, Inc. All rights reserved. Published 1996. Printed in the United States of America No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior written permission of the publisher. ANSI/IEEE S
7、td 91a-1991 Recognized as an American National Standard (ANSI) Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 10:33:26 MDTNo reproduction or networking permitted wi
8、thout license from IHS -,-,- ANSI/IEEE Std 91-1984 10 May 1984 (Superseding ANSI Y32.14-1973 IEEE Std 91-1973) Acceptance Notice This 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 exis
9、ting regulations. Copies of the document are stocked at the Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094 for issue to DoD activities only. Other Government activities, contractors, private concerns, or other requestors must obtain the document from:
10、The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street New York, NY 10017-2394 USA Title of Document: IEEE Standard Graphic Symbols for Logic Functions Document No: ANSI/IEEE Std 91-1984 Date of Specific Issue Adopted: 9 June 1984 Releasing Industry Group: The Institute of
11、Electrical and Electronics Engineers, Inc. Custodians: Military Coordinating Activity: ArmyAR ArmyAR NavySH Air Force13 (Project DRPR0231) Review Activities: ArmyAV, MI, AM CR, ER NavyOS, AS Air Force15, 17, 11 User Activities: ArmyAT NavyMC NOTICE: When reaffirmation, amendment, revision, or cancel
12、lation of this standard is initially proposed, the industry group responsible for this standard shall inform the military coordinating activity of the proposed change and request participation. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with I
13、EEELicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 10:33:26 MDTNo reproduction or networking permitted without license from IHS -,-,- NOTICE OF ADOPTION ADOPTION NOTICE 1 1 JULY 1991 IEEE Std 91a-1991 27 JUNE 1991 The Institute of Electrical and Electronics Engineers, Inc.,
14、 IEEE Std 91a-1991, was adopted on 1 July, 1991 and is approved for use by the Department of Defense (DoD). Copies of this document are stocked at the Standardization Documents Order Desk, Bldg 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094 for issue to DoD activities only. Other Government act
15、ivities, contractors, private concerns, or other requestors must obtain the document from: The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street New York, NY 10017 Title of Document: Supplement to IEEE Standard Graphic Symbols for Logic Functions Date of Specific Issue Ado
16、pted: 27 June 1991 Releasing Industry Group: The Institute of Electrical and Electronics Engineers, Inc. Custodians: Military Coordinating Activity: ArmyAR ArmyAR NavyOS Air Force13 (Project DRPR0314) Review Activities: ArmyAT, AV, CR, ER, MI NavyAS, EC, MC, SH Air Force11, 13, 15, 16, 17, 99 DLADH,
17、 ES NSANS User Activities: ArmyAT AMSC N/A AREA DRPR DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=NASA Technical Standards 1/9972545001 Not for R
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30、al validity or scope of those patents that are brought to its attention. Copyright The Institute of Electrical and Electronics Engineers, Inc. Provided by IHS under license with IEEELicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 10:33:26 MDTNo reproduction or networking pe
31、rmitted without license from IHS -,-,- 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 Sy
32、mbols for Logic Functions, and IEEE Std 91a-1991, Supplement to IEEE Std 91-1984. In this edition (published in 1996), the two standards 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
33、 91a- 1991: Pictorial Table of Contents Table of Contents Section 6: Symbols for Highly Complex Functions Appendix A: Recommended Symbol Proportions Appendix D: Integrated Circuits Used as Examples, Commercial Part Numbers vs. Symbol Numbers Index Numerous other revisions to IEEE Std 91-1984 in Sect
34、ions 1 through 5 were made. The new Table of Contents and the new Index indicate specifically where revisions were made. Further, change bars marked in the outside margins indicate the locations of significant changes. Each standard has a unique foreword, included below. IEEE Std 91-1984 foreword Th
35、is standard defines an international language by which it is possible to determine the functional behavior of a logic circuit as described on a logic or circuit diagram with minimal reference to supporting documentation. Like natural languages, the language set forth in this standard has been design
36、ed to allow a single concept to be expressed in one of several different ways, according to the demands of a particular situation. Consequently, this standard does not attempt, nor intend to establish single correct symbols for particular devices. A symbol appropriate for one application of a device
37、 may not be appropriate for another. The contributors to this standard represent a broad range of institutions, technologies, and documentation needs. They include industrial, governmental, and educational organizations, producers and consumers of devices and equipment, users and non-users of comput
38、er-aided design and drafting, and a considerable range of aesthetic preferences. That a consensus of such diverse interests could be achieved in producing this standard is indicative of not only the utility of the approach, but more importantly, of the increasing need among designers and maintainers
39、 of digital systems for a common 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 of information on the design of binary-operated controls and systems. It is the latest step in a program that be
40、gan in 1956 within the IEEE to develop a comprehensive single standard, consistent with ongoing developments in technology and logic symbology, from several ad hoc, industry, military, and international standards. In 1960, an ad hoc group on logic diagram graphic symbols was formed within the Americ
41、an National Standards Institute in order to develop a draft American Standard. In 1961, this committee became a permanent subcommittee, Y32.14, of the Graphic Symbols Committee, Y32, under the cosecretariat of ASME and IEEE. Its work resulted in the publication of IEEE Std 91-1962 (ANSI Y32.14-1962
42、), adopted in 1965 by the US Navy. The subcommittee was reorganized in 1969 to prepare a new draft standard that would have broader acceptance and be in accord with the developments within the International Electrotechnical Commission (IEC). ANSI/IEEE Std 91-1973 (Y32.14-1973) subsequently received
43、approval from ANSI, and the US Department 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, has worked closely with IEC Technical Committee 3 to prepare major new revisions of thi
44、s standard and IEC Pub 617, Part 12 (the successor to Pub 117, Part 15). The aim was for a US standard that would be mutually compatible with the IEC standard, broadly acceptable, and that would provide notation or guidelines by which any SSI through VLSI Copyright The Institute of Electrical and El
45、ectronics Engineers, Inc. Provided by IHS under license with IEEELicensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 10:33:26 MDTNo reproduction or networking permitted without license from IHS -,-,- vi device might be usefully and accurately represented. Fourteen drafts of thi
46、s document were prepared in parallel with drafts of the new IEC document by an ad hoc working group of SCC 11.9 before the preparers and reviewers believed that these goals had been met. Symbology, such as language and technology, will continue to evolve, and IEEE SCC 11.9 will continue to work with
47、 IEC TC3 to update logic symbol standards as future needs dictate. Suggestions for improvement of this standard are welcomed. They should be addressed to: Secretary IEEE Standards Board The Institute of Electrical and Electronics Engineers, Inc. 345 East 47th Street New York, NY 10017-2394 USA When
48、this standard was approved, the IEEE Standards Coordinating Committee on Graphic Symbols and Designations, Subcommittee SC 11.9 on Logic Symbols, had the following membership: Thomas R. Smith, Chair* Charles J. Andrasco Richard R. Barta M. Paul Chinitz* Edwin D. Edwards Philip H. Enslow, Jr. Charles A. Fricke Arthur C. Gannett James J. George Tommy J. Gibbons Edward J. Harrington* Verle W.