计算机专业英语教程(第三版)(unit5——)
计算机专业英语unit 5-2
Contents
1. Lead-in activity 2. Passage learning
3. Exercises 4. Fun time
Lead-in activity:
• Do you use wireless network a lot?
Thanks for listening~
Passage-learning
Para one：
Computer security is the process of preventing and detecting unauthorized use of your computer. Prevention measures help you to stop unauthorized users (also known as “intruders”) from accessing any part of your computer system. An effective network security strategy requires identifying threats and then choosing the most effective set of tools to combat them.
wireless networks. You can either install software
firewalls on each computer, or install a hardware
firewall on your entire network.
ห้องสมุดไป่ตู้
Exercises
Find Information Task Ⅰ: 1. No, it is different. 2. A small home or an office would only require basic security. 3. Large businesses will require high maintenance and advanced software and hardware 4. Yes, it is. 5. We can either install software firewalls on each computer, or install a hardware firewall on your entire network.
计算机专业英语教程课后答案-宋德福第三版
Unit1EX11 F2 T3 T4 F5 T6 F7 T8 T9 T 10FEX21.Input hardware, storage hardware, processing hardware, output hardware2.power, speed, memory3.central processing unit4.internal, primary, memory5.keyboard, central processing unit, main memory, monitorEX3 PARTA1 F2 D3 G4 C5 B6 A7 E8 HEX3 PART B1 F2 E3 G4 B5 A6 C 7D 8 HEX41 input device2 screen3 manipulates4 instructions5 retrieve6 codes7 hardcopy8 functionEX51 T2 T3 F4 F5 T6 F7 T8 TUNIT2EX11 T2 F3 T4 F5 T6 F7 T8 FEX21 sizes, shapes, processing capabilities2 supercomputers, mainframe computers, minicomputers, microcomputers3 mainframe computer4 microcomputer, storage locations5 portables, laptop computers, desktop workstations6 semiconductor7 CPU, memory, storage, devices, processing, users8 microprocessor chipEX3 PARTA1 C2 A3 H4 I5 E6 F7 G8 JEX3 PARTB1 capacity2 device3 laptop computer4 Portable computers5 Silicon6 semiconductor7 workstation8 V oltage, voltage9 RAM10ROMEX41 portable2 access3 main memory4 sophisticated programs5 processing capabilities6 instructions7 computation8 computer professionalEX51 T2 T3 F4 F5 F6 T7 F8 T9 T 10T 11F 12T 13 T 14 TUNIT3EX11 T2 F3 T4 T5 T6 T7 F8 F9 T 10 F 11T 12F 13F 14TEX21 microprocessor2 bus3 register4 control unit5 processor6 binary7 arithmetic, logic 8 milliseconds, microseconds9 instruction 10execution11megahertz 12wordsizeEX3 PARTA1 F2 A3 J4 C5 D6 E7 H8 I9 B 10GEX3 PARTB1 Storage2 chip3 buses4 ALU5 register6 control unit7 machine language 8 binary system9 bits 10computer programEX41 configuration2 decodes3 data bus4 characters5 converts6 synchronize7 circuitry8 internal clockEX51 T2 F3 F4 T5 F6 F7 T8 T9 F 10 FUNIT4EX11 F2 T3 T4 F5 F6 T7 F8 T9 T 10 F 11T 12T 13F 14F 15T 16F 17T 18F 19T 20F 21T 22FEX21.memory2.RAM3.diskettes, disks4.chips5.parity6.expanded, extended7.monochrome8.cache9.ROM10.updatedEX3 PART A1 B2 E3 C4 J5 I6 H 7A 8 F 9 G 10D EX3 PART B1.secondary storage2.buffer3.access4.code5.diskette6.slot7.terminals8.motherboard9.byte10.screenEX41.desktop2.software3.animation4.transferred5.sophisticatedpatible7.cache8.upgradeEX51 T2 F3 F4 T5 T6 T7 T8 F9 T 10 F 11T 12F 13F 14T 15T 16F 17F 18F 19F 20T 21T 22TUnit 5Ex1:1 T2 T3 F4 T5 F6 F7 F8 T9 T 10 T 11F 12T 13F 14F 15T 16T 17F 18T 19F 20F 21T 22T 23TEX21.mail, courier2.hub, star3.local area network4.packets5.Ethernet6.kilobits per second, megabits per second, gigabits per second7.circuit switching8.reassembled9.internet protocol, transmission control protocol10.datagrams11.frames12.binary, decimalEX3 part A1 C2 E3 B4 F5 A6 D7 H8 GEX3 part B1.hub2.zipped3.decimal4.frame5.binary number6.internet7.packet8.bandwidthEX41.forwarded2.reassembled3.are encapsulated4.cable5.bursty6.submit7.are retransmitted8.protocolEX51.IP address2.notation3.dotted-decimalputer network5.background6.shared7.geographic8.privacyExercise to the Passage for ReadingEX61.有意为维修技师使用所留2.被弃的、丢失的或损坏了的数据都进了数据桶。
计算机专业英语第三版教学课件Unit5 Software Engineering
布朗先生：您好！中华计算机公司。我能为您做些什么？
Linda: Hello, Mr. Brown. It is Linda. Got a minute?
琳达：您好，布朗先生。我是琳达。您有时间吗？
Mr. Brown: I see your point. If we have to spend more time on developing the second version, we’ll have to adjust the schedule. People need to know that we have adjusted the project development plan as soon as possible. Do you want me to call the project manager?
Look and Learn Dialogue Reading Learn More New Words and Phrases
A software development project organization.
Lesson 14
Unit 5
Look and Learn Dialogue Reading Learn More New Words and Phrases
Mr. Brown: Yes.We planned to put the two versions in the same development process. Well, what kind of problem are you having now?
布朗先生：是的。我们计划在同一个开发过程中投入两个版本。那您现在遇到什么问题了？
计算机专业英语教程(第三版)答案
附录5练习参考答案Unit 1[Ex 1] 1. F 2. T 3. T 4. F 5. T 6. T 7. T 8. T 9. T 10. F[Ex 2] 1. input, storage, processing, and output 2. power; speed; memory3. central processing unit4. internal; primary; memory5. keyboard; central processing unit; main memory; monitor[Ex 3] A. 1. F 2. D 3. G 4. C 5. B 6. A 7. E 8. HB. 1. user 2. monitor 3. data 4. keyboard 5. data processing6. information7. computer8. memory[Ex 4] 1. input device 2. screen 3. manipulates 4. instructions 5. retrieve6. code7. hard copy8. function[Ex 5] 1. T 2. T 3. F 4. F 5. T 6. F 7. T 8. FUnit 2[Ex 1] 1. T 2. F 3. T 4. F 5. T 6. T 7. T 8. F[Ex 2] 1. sizes, shapes, processing capabilities2. supercomputers, mainframe computers, minicomputers, microcomputers3. mainframe computer4. microcomputers, storage locations5. protables, laptop computers/notebook/palm-sized computer.desktop workstations6. semiconductor7. CPU, memory, storage, devices, processing, users8. microprocessor chip[Ex 3] A. 1. C 2. A 3. H 4. I 5. E 6. F 7. G 8. B2. 1. capacity 2. device3. laptop computer4. Portable computers5. Silicon6. semiconductor7. workstation8. voltage9. RAM 10. ROM[Ex 4] 1. portable 2. access 3. main memory 4. sophisiticated programs5. processing capability6. instructions7. computation8. computer professional[Ex 5] 1. T 2. T 3. T 4. F 5. F 6. T 7. F 8. T 9. F 10. T 11. F 12. T13. T 14. TUnit 3[Ex 1] 1. T 2. F 3. T 4. T 5. T 6. T 7. F 8. F 9. T 10. F 11. T 12. F13. F 14. T[Ex 2] 1. microprocessor 2. bus 3. register 4. control unit 5. processor6. binary7. arithmetic, logical8. milliseconds, microseconds, nanoseconds.9. instruction 10. execution 11. megahertz 12. wordsize[Ex 3] A. 1. F 2. A 3. J 4. C 5. D 6. E 7. H 8. I 9. B 10. G2. 1. Storage 2. chip3. registers4. ALU5. bus6. control unit7. machine language 8. binary system 9. bits 10. computer program[Ex 4] 1. configuration 2. converts 3. data buses 4. characters5. decodes6. synchronize7. circuitry8. internal clock[Ex 5] 1. T 2. F 3. F 4. T 5. T 6. F 7. T 8. T 9. T 10 FUnit 4[Ex 1] 1. F 2. T 3. T 4. T 5. F 6. T 7. F 8. T 9. T 10. F 11. T 12. T13. F 14. F 15. T 16. F 17. T 18. F 19. T 20. F 21. T 22. F[Ex 2] 1. main memory 2. RAM 3. diskettes/floppy disks; hard disks4. chips5. parity6. expanded, extended7. monochrome8. cache 9. ROM 10. updated[Ex 3] A. 1. B 2. E 3. C 4. J 5. I 6. H 7. A 8. F 9. G 10 D2. 1. secondary srorage 2. buffer3. access4. code5. diskette6. slots7. terminals8. motherboard9. bytes 10. screen[Ex 4] 1. desktop 2. software 3. animation 4. transferred 5. sophisticated6. compatible7. cache8. upgrade[Ex 5] 1. T 2. F 3. T 4. T 5. F 6. T 7. F 8. T 9. T 10. T 11. T 12. T13. T 14. F 15. F 16. TUnit 5[Ex 1] 1. T 2. F 3. F 4. F 5. T 6. T 7. T 8. F 9. F 10. T 11. F 12. F13. T 14. T[Ex 2] 1. floppy disks 2. disk drive 3. revolutions 4. bits 5. megabyte,gigabyte, terabyte 6. density 7. sectors 8. 1.44[Ex 3] A. 1. H 2. F 3. E 4. D 5. C 6. A 7. B 8. GB. 1. read/write heads 2. sector 3. magnetic tape 4. index5. disk drives6. format7. clone8. tracks[Ex 4] 1. increment 2. spins 3. activate 4. specification 5. magnetize6. overwrite7. contaminated8. mechanism[Ex 5]1.有意为技术服务人员留下的2.抛弃、丢失或毁灭的数据都进入到数据接收器中3.远远不能覆盖绝大多数嫌疑人4.真正奇才所掌握的技术5.文件和程序6. 1. 系统详情、扩展其性能5. 敏感信息的人7.滞缓的特性和控制开发的复杂性8.非常巧妙的权宜之计，旨在解决很棘手的问题9.不能有效与他人沟通的人10.一个程序、数据结构或全部程序的11.交叉指向不合适的新闻组12.打免费长途电话了；通信网络，但不单指通信网络13.眼睛疲劳14.无关紧要或令人讨厌的琐碎问题15.不会有人发现这些漏洞的，或真的发现了也不会利用16.受人雇佣，为测试系统的安全性而攻入某个地方17.那种使用许多GOTO、例外或另外的“非结构的”分支构造18.不能定期运行适当的抑制程序19.某种非常友好程序的20.远在没有正式发行之前21.该技术也许不能发挥作用。
计算机专业英语 Chapter5
5.1 OS Function
New Words & Expressions: allocation n.分配 安置 分配, interface n.界面，接口 界面， 分配 界面 binding n. 捆绑，绑定 捆绑， mutual interference 相互干扰 entrust v.委托 criteria n.标准 委托 标准 constraint n.约束 强制 局促 partition vt.分区 约束, 约束 强制, 分区 apriori 预先 事前 预先,事前 perceive v.感知 感到 认识到 感知, 感知 感到, suboptimal adj.未达最佳标准的 preemption n.抢占 未达最佳标准的 抢占 sequential adj. 顺序的 串行的 concurrent adj.并发的 并行的 顺序的,串行的 并发的, 并发的 exclusive use 专用 de-allocate vt. 释放 scheduling n.调度 salient adj. 重要的，显著的 重要的， 调度
5.1.1 Resource allocation and related functions
Resource allocation criteria depend on whether a resource is a system resource or a user-created resource. Allocation of system resources is driven by considerations of efficiency of resource utilization. Allocation of user-created resources is based on a set of constraints specified by its creator and typically embodies the notion of access privileges. 资源分配的标准根据资源的分类确定， 资源分配的标准根据资源的分类确定，系统资源的分配要考虑 资源利用的效率， 资源利用的效率，而用户创立资源的分配则基于该资源的创立 者所设定的特种限制，比如访问权限。 者所设定的特种限制，比如访问权限。
计算机专业英语(第3版)
2020/8/16
计算机专业英语（第3版）
8
The control unit （控制单元 ）
➢ The control unit is the functional unit that is responsible for supervising the operation of the entire computer system.
形图像、CAD、计算机动画和多媒体应用软件。第 4单元是计算机网络相关知识介绍，包括计算机网
络基础、互联网搜索引擎、无线网络技术及网络安
全。第5单元讲述电子商务方面的内容，有电子商 务基础、EDI和网络广告。第6单元是计算机领域 新技术介绍，包括人工智能、虚拟现实和神经网络。
2020/8/16
计算机专业英语（第3版）
➢ 控制单元是负责监督整个计算机系统操作的功能部件。
➢ The control unit fetches instructions from memory and determines their type or decodes them.
➢ 控制单元从存储器中取出指令，并确定其类型或对之进行译码。
➢ 中央处理器是计算机系统的心脏。它负责实现由程序启动 的全部算术运算和逻辑判断。
➢ The CPU coordinates all the activities of the various components of the computer. It determines which operations should be carried out and in what is the order.
➢ 中央处理器协调计算机各个部件的所有活动。它确定应该 以什么顺序执行哪些操作。
计算机专业英语(第3版)
➢ The CPU coordinates all the activities of the various components of the computer. It determines which operations should be carried out and in what is the order.
2020/8/16
计算机专业英语（第3版）
13
Notes
[4] For example, if an instruction is to perform the operation of adding two numbers, it must know what the two numbers are and where the two numbers are. 这里的“what the two numbers are and where the two numbers are”作宾语，它由两个并列的从句组成。
形图像、CAD、计算机动画和多媒体应用软件。第 4单元是计算机网络相关知识介绍，包括计算机网
络基础、互联网搜索引擎、无线网络技术及网络安
全。第5单元讲述电子商务方面的内容，有电子商 务基础、EDI和网络广告。第6单元是计算机领域 新技术介绍，包括人工智能、虚拟现实和神经网络。
2020/8/16
计算机专业英语（第3版）
第一，计算机具有进行加、减、乘、除及求幂等各种算术运 算的电路。
Second, computers have a means of communicating with the user.
第二，计算机具有与用户通信和功能。
计算机专业英语第3版unit5
21.06.2021
精选2021版课件
7
Legal issues in electronic-commerce
➢ Electronic-commerce is so new that the legal, ethical, and other public policy issues that are necessary for electronic-commerce’s existence are still evolving.
译文：通过在互联网上全天候地提供产品及服务的最新信息， 商家可以与客户和消费者随时建立紧密联系来确保他们的竞 争优势。
21.06.2021
精选2021版课件
13
Notes
[2] From a service perspective, EC is a tool that addresses the desire of firms, consumers, and management to cut service costs while improving the quality of goods and increasing the speed of service delivery. “From a service perspective”作状语，主句是“EC is a tool”，“that”后面的部分作定语修饰“tool”。
The broader definition is that electronic commerce is the use of electronic tools in commercial activities.
21.06.2021
精选2021版课件
4
Classification of the EC field by the nature of the transactions
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Unit 5Ex1:1 T2 T3 F4 T5 F6 F7 F8 T9 T 10 T 11F 12T 13F 14F 15T 16T 17F 18T 19F 20F 21T 22T 23TEX21.mail, courier2.hub, star3.local area network4.packets5.Ethernet6.kilobits per second, megabits per second, gigabits per second7.circuit switching8.reassembled9.internet protocol, transmission control protocol10.datagrams11.frames12.binary, decimalEX3 part A1 C2 E3 B4 F5 A6 D7 H8 GEX3 part B1.hub2.zipped3.decimal4.frame5.binary number6.internet7.packet8.bandwidthEX41.forwarded2.reassembled3.are encapsulated4.cable5.bursty6.submit7.are retransmitted8.protocolEX51.IP address2.notation3.dotted-decimalputer network5.background6.shared7.geographic8.privacyExercise to the Passage for ReadingEX61.有意为维修技师使用所留2.被弃的、丢失的或损坏了的数据都进了数据桶。
3.比大多数人怀疑的那样有更少的相同之处。
4.只能由真正有特殊才能的人所打造的核心技术。
5.程序和文件6.（1）和拓展程序所能（5）敏感信息的干涉者7.隐藏的特性和控制开发复杂性8.（2）意在用权宜而不清晰的方式解决某一特别难以解决情形的聪明的编程窍门。
9.不能很好地和人沟通10.对程式，数据结构或整个程序11.互相指责别人和不适当的团组有关12.（1）打免费长途电话（2）但并不限于通讯网络13.眼部疲劳14.（1）他们认为微不足道或令人讨厌的问题。
15.没人能发现这些漏洞，或者，即便发现了，也不会探究利用。
16.受雇攻入某地以检测其安全性17.用了很多GO To语句，例外语句或其它非结构化的分支构造18.其后，没有定时作适当的压制（炸弹爆炸）的工作，19.善意20.在发布前很久21.这种技术可能不能运转，如果真是这样，人们再不会知道是为什么22.在Suns系统中，是L1—A，在苹果机中，是！23.它完全不起作用，系统想做些什么，但被卡住了，不能取得进展24.（1）指与计算机软硬件相对的人的神经系统，（2）此计算机系统的软硬件25.在紧急关头，能很快找到程序缺陷并予以修复26.指头脑封闭的人Unit 6Unit6EX11 F2 T3 F4 T5 T6 F7 F8 T9 T 10 F 11F 12F 13TEX21 compatible2 hardcopy3 terminal, monitor4 inked ribbon5 line printer6 Thermal7 Monochrome 8 liquid crystal displayEX3Part A1 G2 B3 I4 F5 D6 H7 C8 E9 J 10 APART B1 printers2 hardcopy3 CRT4 hardware5 pixel6 output7 software 8 Line printers9 plotters 10graphicsEX41 attached2 compatible3 flexible4 mechanism5 perform6 rotate7 transferring 8 videoExercise to the Passage for ReadingEX51 T2 F3 T4 F5 T6 F7 F8 T9 F 10T 11F 12T 13F 14T 15F 16F 17F 18T 19T 20F 21T 22F 23T 24F 25TUnit 7EX11 T2 F 3T 4T 5F 6F 7T 8T 9F 10F11F 12T 13F 14T 15T 16F 17T 18T 19F 20FEX21 printers, plotters2 graphics3 pins4 pages per minute5 dots per (square) inch6 line per minute7 non-impact 8 carbonEX3 PART A1 D2 F3 B4 A5 G6 E7 C8 HEX3 PART B1 print wheel2 microcomputers3 ink-jet printer4 network5 noise6 output device7 desktop publishing 8 dot-matrix printersEX41 installations2 categorized3 image4 ribbon5 monochrome6 physical7 referred to 8 dotEX5 Exercise to the Passage for Reading1 F2 T3 T4 T5 F6 T7 F8 T9 T 10 F11T 12T 13F 14F 15T 16F 17T 18F 19T 20T21T 22F 23T 24TUnit 8EX11 T2 F3 T4 T5 F6 T7 F8 T9 F 10 T 11F 12T 13T 14 F 15T 16T 17F 18T 19T 20F 21F 22T 23T 24FEX21 Local Area Networks，wide area networks2 client-server3 bus4 protocol5 hardware6 microwaves7 adapters, router 8 stack9 upper, lower 10layeredEX3PARTA1 D2 E3 F4 H5 A6 G7 B8 CPARTB1server 2 adapter3 topology4 microwave5 Local6 inception7 Wide 8 WirelessEX41 Layout2 accommodate3 conforms4 address5 interoperate6 session7 is designated 8 configuringEX51 signal of2 cell3 transmits4 microwave5 network6 data7 continuously 8 devicesEX61 T2 F3 F4 T5 T6 T7 F8 F9 T 10 T 11F 12T 13F 14F 15T 16T 17T 18T 19T 20F 21F 22T 23F 24T 25F 26T 27F 28F 29T 30T 31T 32TUnit 11EX11 T2 T3 F4 F5 T6 F7 T8 T9 T 10T 11F 12F 13F 14T 15T 16T 17T 18T 19F 20FEX21. html2. elements3. ASCII files4. tags5. webmaster6. Heads, tables, paragraphs, lists7. Html tags 8. slash9. case sensitive 10 required11 view, source 12 template13 space, linefeed, carriage return 14 htmlEX3 PARTA1 C2 D3 H4 F5 E6 B7 A8 GEX3 PARTB1 bookmark, bookmark2 browsers3 primers4 HTML5 link6 servers, servers, servers, servers7 webmaster 8 search engineEX41. 产生HTML文档 2 产生web文档3 文档类型定义4 平台独立风格5 web 服务器6 本地浏览模式7 HTML版本8 HTML文档9 纯文本文件10文本编辑器11文字处理软件12只有换行符的文档13HTML编辑器14HTML标签基础15文字处理器16将某人的文件放在网上17社区网络18提供免费的Internet连接19本地Internet服务提供商20付费将文件置于服务器上21使用HTML标签标注文件的元素22左尖括号23标签名24右尖括号25标签指令26图像的源HTML码27大小写区分28主体架构文档30模板文件31看源文件32一个有HTML码的源文件32HTML编码信息33文件（名）的后缀34全球环境35大和/或粗的字体36回车37字符换行38换行符EX51 T2 T3 F4 T5 T6 F7 T8 T9 F10T 11T 12F 13T 14T 15F 16T 17T 18F19F 20TUnit 12EX11 F2 F3 T 4T 5 T 6 T 7 T 8 F 9 F 10 T 11F 12T 13F 14F 15T 16F 17F 18F 19T 20TEX21. analog2. relational3. distributed4. object-oriented5. privileges6. structured query language7. column, row 8. infancyEX3 PARTA1 C2 E3 F4 G5 A6 H7 B8 DEX3 PARTB1. query2. database3. interface4. infancy5. profile6. tabular7. Interactive 8. metadataEX41. legacy2. interconnected3. integrity4. intermittent5. converts6. dispersed7. reassembling 8. accessEX51 C2 G3 F4 H5 A6 E7 B8 DEX61 T2 T3 F4 T5 T6 F7 F8 T9 T 10TUnit 13EX11 F2 F3 T4 T5 F6 T7 T8 F9 T 10 T 11F 12T 13F 14T 15F 16F 17T 18T 19F 20F 21TEX21 functions2 structures3 object4 message5 object instances6 arguments7 client-server 8 codes, bugs9 specific, general 10c++EX3 PARTA1 C2 E3 F4 B5 J6 H7 I8 D9 A 10GEX 3PARTB1 server2 clients3 database4 jargon5 programmers6 computer7 Java 8 codes9 c++ programming language 10information hidingEX41 buzzword2 acronym3 syntax4 browser5 intranet6 Network7 interface 8 by stormEX51 T2 F3 T4 F5 T6 T7 T8 F9 T 10 T 11F 12T 13T 14F 15T 16F 17T 18T 19T 20 FUnit 14EX11 T2 F3 T4 F5 F6 F7 T8 F9 T 10 T 11F 12T 13F 14T 15T 16T 17T 18TEX21 duplicate2 destination3 entries4 compound, single-entry5 overwrite6 array7 one-dimensional 8 two-dimensional9 arrays, table/.DBF 10recordsEX3 PARTA1 E2 D3 B4 C5 AEX3 PARTB1 E2 A3 B4 C5 DEX41 duplicate2 specific3 source, destination4 current5 path6 assign 7original 8 dialogEX5I feasibility, dataII requirement analysis, system requirementIII requirment specification, managementIV feasibleVVI physical。