BS 7238-1990 Glossary for terminology related to microprocessors《有关微处理器的术语词汇》.pdf
《BS 7238-1990 Glossary for terminology related to microprocessors《有关微处理器的术语词汇》.pdf》由会员分享,可在线阅读,更多相关《BS 7238-1990 Glossary for terminology related to microprocessors《有关微处理器的术语词汇》.pdf(10页珍藏版)》请在麦多课文档分享上搜索。
1、BRITISH STANDARD BS7238:1990 IEC824:1988 Glossary for Terminology related to microprocessorsBS7238:1990 This BritishStandard, having been prepared under the directionof the Information Systems Technology StandardsPolicy Committee, waspublished under the authorityof the Board of BSI andcomes into eff
2、ect on 31July1990 BSI 12-1999 The following BSI references relate to the work on this standard: Committee reference IST/6 Draft for comment89/65512DC ISBN 0 580 18119 7 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the Information Systems Te
3、chnology Standards Policy Committee (IST/-) to Technical Committee IST/6, upon which the following bodies were represented: Association for Payment Clearing Services British Computer Society British Telecommunications plc Business Equipment and Information Technology Association Department of Trade
4、and Industry (Information Technology Division) Department of Trade and Industry (National Physical Laboratory) Electricity Supply Industry in England and Wales Electronic Engineering Association H.M. Treasury (Central Computer and Telecommunications Agency) Information Technology Users Standards Ass
5、ociation Inter-universities Computing Committee Joint Network Team LAMSAC National Computing Centre Ltd. National Health Services OFTEL (Office of Telecommunications) Post Office Telecommunication Engineering and Manufacturing Association Telecommunications Managers Association User Standards Forum
6、for Information Technology (Institute of Data Processing Management) Amendments issued since publication Amd. No. Date CommentsBS7238:1990 BSI 12-1999 i Contents Page Committees responsible Inside front cover National foreword ii Scope 1 1 Terms and definitions 1 Publications referred to Inside back
7、 coverBS7238:1990 ii BSI 12-1999 National foreword This BritishStandard, prepared under the direction of the Information Systems Technology Standards Policy Committee, is identical with IEC824:1988 “Terminology related to microprocessors” published by the International Electrotechnical Commission (I
8、EC). The Technical Committee has reviewed the provisions of ISO2382 to which reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. A British Standard does not purport to include all the necessary provisions of a contract. Users of British
9、Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-reference International Standard Corresponding BritishStandard IEC748-2 (1985) BS6493 Semiconductor devices Section 2.2:1986 Recommendations fo
10、r digital integrated circuits (Identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicat
11、ed in the amendment table on the inside front cover.BS7238:1990 BSI 12-1999 1 Scope This standard gives terms and definitions applicable to microprocessor systems. 1 Terms and definitions NOTEWhere indicated, terms and definitions have been taken from the following parts and sections of ISO Standard
12、2382: section 07; section 10; part 11; part 12. 1.1 Architecture 1.1.1 bus a common path along which signals travel from one of several sources to one or several destinations 1.1.2 arithmetic logic arithmetic and logic unit, ALU (abbreviation) (ISO2382-1111.01.08) in a processor the part that perfor
13、ms arithmetic operations logic operations, arithmetic operations and logic operations NOTEThe term “arithmetic unit” is sometimes used for a unit that performs both arithmetic and logic operations. 1.1.3 (instruction) control unit (ISO2382-1111.01.02) in a processor, the part that retrieves instruct
14、ions in proper sequence, interprets each instruction, and applies the proper signals to the arithmetic and logic unit and other parts in accordance with this interpretation 1.1.4 program counter equivalent to ISO definition of “Instruction address register, program register, instruction pointer regi
15、ster” (ISO2382-1111.02.02) a special purpose register used to hold the address of the next instruction to be executed 1.1.5 register (ISO2382-1111.01.19) a part of internal storage having a specified storage capacity and usually intended for a specific purpose NOTESub-clause 1.3.11 of ChapterII of I
16、EC Publication 748-2 reads: “An arrangement of bistable circuits by means of which information may be accepted, stored, and retrieved. NOTEThe register may form part of another memory and is of a specified capacity.” 1.1.6 register length (ISO2382-1111.02.15) the storage capacity of a register 1.1.7
17、 general purpose register (ISO2382-1111.02.08) a register, usually explicitly addressable, within a set of registers, that can be used for different purposes, such as an accumulator, an index register, or a special handler of data 1.1.8 address register register that is used to hold an address 1.1.9
18、 base address (ISO2382-VII07.19.05) a numeric value that is used as a reference in the calculation of addresses in the execution of a computer program 1.1.10 base (address) register (ISO2382-1111.02.04) a register that holds a base address 1.1.11 read/write register register that is used to hold dat
19、a received from or to be transmitted to the bus 1.1.12 instruction register (ISO2382-1111.02.01) a register that is used to hold an instruction for interpretation 1.1.13 accumulator (ISO2382-1111.02.11) a register in which one operand of an operation can be stored and subsequently replaced by the re
20、sult of an operation 1.1.14 index register (ISO2382-1111.02.03) a register whose contents can be used to modify an operand address during the execution of computer instructions NOTEAn index register may be used as a counter to control the execution of a loop, to control the use of an array, for tabl
21、e look-up, as a switch, or as a pointer. 1.1.15 indicator (ISO2382-VII07.06.05) an item of data that may be interrogated to determine whether a particular condition has been satisfied in the execution of a computer program examples: A switch indicator; an overflow indicator 1.1.16 condition code reg
22、ister, indicator register a register containing the indicators that result from the operation of the arithmetic and logic unit NOTEThe register may also contain other indicators.BS7238:1990 2 BSI 12-1999 1.1.17 status (of a central processing unit) one or more data bits showing which one of a class
23、of operations is being performed, has been completed or is recognized by the central processing unit 1.1.18 status register a register containing one or more status bits 1.1.19 pushdown storage, stock (storage) (ISO/DIS2382-12.212.02.24) a storage device in which data are ordered in such a way that
- 1.请仔细阅读文档,确保文档完整性,对于不预览、不比对内容而直接下载带来的问题本站不予受理。
- 2.下载的文档,不会出现我们的网址水印。
- 3、该文档所得收入(下载+内容+预览)归上传者、原创作者;如果您是本文档原作者,请点此认领!既往收益都归您。
下载文档到电脑,查找使用更方便
10000 积分 0人已下载
下载 | 加入VIP,交流精品资源 |
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- BS72381990GLOSSARYFORTERMINOLOGYRELATEDTOMICROPROCESSORS 有关 微处理器 术语 词汇 PDF

链接地址:http://www.mydoc123.com/p-546639.html