ANSI INCITS ISO 5807-1985(R2003) for Information Processing - Documentation Symbols and Conventions for Data Program and System Flowcharts Program Network Charts and System Resourc.pdf

1、 INCITS/ISO 5807-1985 (R2003)(formerly ANSI/ISO 5807-1985 (R1998)for Information Processing -Documentation Symbols andConventions for Data,Program and System Flowcharts,Program Network Charts andSystem Resources ChartsCopyright American National Standards Institute Provided by IHS under license with

2、 ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI/IS0 5807-l 985 American National Stan

3、dard for Information Processing- Documentation Symbols and Conventions for Data, Program and System Flowcharts, Program Network Charts and System Resources Charts Secretariat Computer and Business Equipment Manufacturers Association Approved February 27, 1991 American National Standards Institute, I

4、nc. Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AmericanNationalStandardApproval of an American National Standard requires review by ANSI that therequirements for due process

5、, consensus, and other criteria for approval havebeen met by the standards developer.Consensus is established when, in the judgment of the ANSI Board of StandardsReview, substantial agreement has been reached by directly and materiallyaffected interests. Substantial agreement means much more than a

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7、has approved the standardsor not, from manufacturing, marketing, purchasing, or using products, processes,or procedures not conforming to the standards.The American National Standards Institute does not develop standards and will inno circumstances give an interpretation of any American National Sta

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10、rrentinformation on all standards by calling or writing the American National StandardsInstitute.Published byAmerican National Standards Institute11 West 42nd Street, New York, New York 10036Copyright 1985 by Information Technology Industry Council (ITI)All rights reserved.These materials are subjec

11、t to copyright claims of International Standardization Organization (ISO),American National Standards Institute (ANSI), and Information Technology Industry Council (ITI). Not forresale. No part of this publication may be reproduced in any form, including an electronic retrieval system,without the pr

12、ior written permission of ITI. All requests pertaining to this standard should be submitted toITI, 1250 Eye Street NW, Washington, DC 20005.Printed in the United States of AmericaCopyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or n

13、etworking permitted without license from IHS-,-,-Foreword (This foreword is not part of American National Standard ANSI/IS0 5807-l 985. This document is identical to ISO/IEC 5807-l 985 and the following three paragraphs are the original foreword as it appeared in that document.) IS0 (the Internation

14、al Organization for Standardization) is a worldwide fed- eration of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 techni- cal committees. Each member body interested in a subject for which a tech- nical committee has

15、been established has the right to be represented on that committee. International organizations, governmental and non-governmen- tal, in liaison with ISO, also take part in the work. Draft International Standards adopted by the technical committees are cir- culated to the member bodies for approval

16、before their acceptance as International Standards by the IS0 Council. They are approved in accor- dance with IS0 procedures requiring at least 75% approval by the member bodies voting. International Standard IS0 5807 was prepared by Technical Committee ISO/TC 97, information processing systems. Req

17、uests for interpretation, suggestions for improvement or addenda, or defect reports are welcome. They should be sent to the X3 Secretariat, Computer and Business Equipment Manufacturers Association, 1250 Eye Street, NW, Suite 200, Washington, DC 20005. This standard was processed and approved for su

18、bmittal to ANSI by Accredited Standards Committee on Information Processing Systems, X3. Committee approval of the standard does not necessarily imply that all committee members voted for its approval. At the time it approved this standard, the X3 Committee had the following members: Richard Gibson,

19、 Chair Donald C. Loughry, Vice-Chair Joanne Flanagan, Secretary Organization Represented Name of Representative Allen-Bradley Company . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Ronald Reimer Joe Lenner (Alt.) American Library Association

20、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Paul Peters American Nuclear Society . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Geraldine C. Main Sally Hartzell (Alt.) AMP, Inc. . . . . . . . . . . .

21、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Edward Kelly Edward Mikoski (Alt.) Apple Computer, Inc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Kare

22、n Higginbottom Association of the Institute for Certification of Computer Professionals (AICCP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Kenneth Zemrowski Eugene Dwyer (Alt.) AT the number of levels depending on the size and complexity of the information processing probl

23、em. The level of detail should be such that the various parts and the interrelationship between the parts are comprehensible as a whole. Typically there will be a chart of the whole system showing the main constituent parts and this will form the top of a hierarchy of charts; each lower level provid

24、ing a more detailed descrip- tion of one or more parts shown on the next higher level chart. 1 Scope and field of application This International Standard specifies symbols to be used in in- formation processing documentation and gives guidance on the conventions for their use in a) data flowcharts:

25、b) program flowcharts; c) system flowcharts; d) program network charts; e) system resources charts. 2 Reference IS0 2382/l, Data processing - Vocabulary - Part 01: Fun- damen tal terms. 1 ) 3 Definitions For the purpose of this International Standard the definitions in IS0 2382/l and the following a

26、pply. 3.1 basic symbol: Symbol used when the precise nature or form of, for example, the process or data media is not known or when it is not necessary to depict the actual medium. 3.2 specific symbol : Symbol used when the precise nature or form of, for example, the process or data media is known a

27、nd when it is necessary to depict the actual medium. 3.3 flowchart: Graphical representation of the definition, analysis, or method of solution of a problem in which symbols are used to represent operations, data, flow, equipment, etc. 4 Data flowchart Data flowcharts represent the path of data in t

28、he solving of a problem and define processing steps as well as the various data media used. A data flowchart consists of a) data symbols to indicate the existence of data; they may also indicate the medium used for this data; b) process symbols to indicate the process to be executed on data; they ma

29、y also indicate the machine function which is used for this process; c) line symbols to indicate the data flow between pro- cesses and/or data media; d) special symbols to facilitate the reading and the writing of the flowchart. 1) At present at the stage of draft. (Revision of IS0 2382/l-1974.) 1 C

30、opyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI/IS0 5807-l 985 By definition, process symbols should be preceded and fol- lowed by data symbols. A data flowchart begins and e

31、nds with data symbols (except special symbols as specified in 9.4). 5 Program flowchart Program flowcharts represent the sequence of operations in a program. A program flowchart consists of 6 a) process symbols for the actual processing operations including symbols that define the path to be followe

32、d taking into account the logical conditions; b) line symbols to indicate the flow of control; c) special symbols to facilitate the reading and the writing of the flowchart. System flowchart System flowcharts represent the control of operations and the data flow of a system. A system flowchart consi

33、sts of a) data symbols to indicate the existence of data; they may also indicate the medium used for this data; b) process symbols to indicate the operations to be executed on data, as well as to define the logical path to be followed; c) line symbols to indicate data flow between processes end/or d

34、ata media as well as the control flow between processes; d) special symbols to facilitate the reading and writing of the flowchart. 7 Program network chart Program network charts represent the path of program acti- vations and the interactions to related data. Each program in a program network chart

35、 is shown only once, whereas in a system flowchart it may appear in more than one control fiow. A program network chart consists of a) data symbols to indicate the existence of data; b) process symbols to indicate the operations to be executed on data; cl line symbols to show the flow between proces

36、ses and data as well as the activations of processes; d) special symbols to facilitate the reading and writing of the network charts. 8 System resources chart System resources charts represent the configuration of data units and process units suitable for the solving of a problem or of a set of prob

37、lems. A system resources chart consists of a) data symbols to show input, output or storage devices; b) process symbols to represent processors, for example, central processing units, channels, etc. ; c) line symbols to represent the data transfer between data devices and processors and control tran

38、sfer between processors; d) special symbols to facilitate the reading and the writing of the system resources chart. 9 Symbols 9.1 Data symbols 9.1.1 Basic data symbols 9.1.1.1 Data This symbol represents data, the medium being unspecified 9.1.1.2 Stored data This symbol represents stored data in a

39、form suitable for pro- cessing, the medium being unspecified. u 9.1.2 Specific data symbols 9.1.2.1 Internal storage 2 Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI/IS0 58

40、07-l 985 This symbol represents data, the medium being internal storage. 111 9.1.2.2 Sequential accass storage This symbol represents data that is only sequentially accessible, the medium being, for example, magnetic tape, tape cartridge, tape cassette. 0 9.1.2.3 Direct access storage This symbol re

41、presents data directly accessible, the medium being, for example, magnetic disk, drum, flexible disk. 9.1.2.4 Document This symbol represents human readable data, the medium being, for example, printed output, an OCR or MICR docu- ment, microfilm, tally roll, data entry forms. 9.1.2.5 Manual input T

42、his symbol represents data, the medium being of any type where the information is entered manually at the time of pro- cessing, for example, on-line keyboard, switch settings, push buttons, light pen, bar-code wand. 9.1.2.6 Card This symbol represents data, the medium being cards, for example, punch

43、ed cards, magnetic cards, mark sense cards, stub cards, mark scan cards. 9.1.2.7 Punched tape This symbol represents data, the medium being paper tape. 9.1.2.8 Display This symbol represents data, the medium being of any type where the information is displayed for human use, for example, video scree

44、ns, on-line indicators. 0 9.2 Process symbols 9.2.1 Basic process symbol Process This symbol represents any kind of processing function, for example, executing a defined operation or group of operations resulting in a change in value, form or location of information, or in the determination of which

45、 one of several flow directions is to be followed. 3 Copyright American National Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSl/lSO5807-1985 Specific process symbols 9.2.2 9.2.2. 1 Predefined process

46、This symbol represents a named process consisting of one or more operations or program steps that are specified elsewhere, for example, a subroutine, a module. Eli 9.2.2.2 Manual operation This symbol represents any process performed by a human being. T-7 9.2.2.3 Preparation This symbol represents m

47、odification of an instruction or group of instructions in order to affect some subsequent activity, for example, setting a switch, modifying an index register or in- itializing a routine. 0 9.2.2.4 Decision This symbol represents a decision or switching type function having a single entry but where

48、there may be a number of alter- native exits, one and only one of which may be activated following the evaluation of conditions defined within the sym- bol. The appropriate results of the evaluation may be written adjacent to the lines representing the paths (see 10.3.1.2) 0 4 Copyright American Nat

49、ional Standards Institute Provided by IHS under license with ANSINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ANSI/IS0 5807-l 985 9.2.2.5 Parallel mode This symbol represents the synchronization of two or more parallel operations. , , B C cl b . . F NOTE - Processes C, D and E cannot commence until process A has been completed; similarly process F should await completion of B, C and D; but