计算机科学引论(2008)影印版课后答案

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Chapter 1

Crssword Puzzle 1. people 2. end user 3. procedures 4. document file 5. device driver 6. database files 7. operation system 8. hardware 9. Internet 10. modem 11. software 12. information 13. data

14. tablet PC Multiple Choice 1. b 2. b 3. a 4. b 5. d 6. d 7. a 8. c 9. d 10. d Matching: 1----e 2----f 3----i 4----h 5---a 6----c 7---g 8---b 9---d 10—j

Open-ended

1. An information system has five parts: people, procedures, software, hardware and data.

People: Are end users who use computer to make themselves more productive. Procedures: Specify rules or guidelines for computer operations. Software: Provides step-by-step instructions for computer hardware.

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Hardware: Processes the data to create information.

Data: Consist of unprocessed facts including text, numbers, image and sounds. People are the most important part of any information system.

2. System software helps the computer manage its own internal resources. It includes three kinds

of programs: operating systems, utilities and device drivers programs.

3. Basic applications are the kinds of programs to be considered computer competent.

Specialized applications are more narrowly focused on specific disciplines and occupations. Basic applications have some types, such as browser, word processor, spreadsheet ,and so on. Also specialized applications have many types, some of the best known are graphics, audio and video, multimedia, Web authoring ,and artificial intelligence programs.

4. There are four types of computers: supercomputers, mainframe computers, minicomputers,

and microcomputers.

Supercomputers are the most powerful type of computer.

Mainframe computers occupy specially wired, air-conditioned rooms, they are capable of great processing speeds and data storage.

Minicomputers are refrigerator sized machines.

Microcomputers are the least powerful, yet the most widely used and fastest-growing, type of computer.

Microcomputers are the most common type of computers.

There are four types of microcomputers: Desktop computers, Notebook computers, Handheld computers and PDA.

5. Connectivity is the capability of you microcomputer to share the information with other

computers.

Wireless revolution dramatically affect connectivity.

A computer network is a communications system connecting two or more computers. Internet is the largest network in the world.

The Web provides a multimedia interface to the numerous resources available on the Internet.

Chapter2

Crossword Puzzle: 1. hits 2. ISP 3. spam 4. applets

5. surf, search engine 6. URL 7. ftp 8. carder 9. attachment 10. B2B

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11. Browser 12. filter 13. link

14. downloading, DSL Multiple Choice: 1. d 2. a 3. c 4. c 5. a 6. a 7. a 8. a 9. d 10. b Matching: 1----i 2----d 3----g 4----e 5---f 6----c 7---h 8---j 9---a 10—b

Open-Ended

1. The most common uses of the Internet are the following: communicating, shopping, searching,

entertainment, education, and so on. I have participated in almost all of them. I think communicating is the most popular.

2. The two most common types of providers are National and wireless.

National service providers provide access through standard telephone connections.

Wireless service providers provide Internet connections for computers with wireless modems and a wide array of wireless devices.

3. A typical e-mail message has three basic elements: header, message and signature.

4. Social networking is the grouping of individuals into specific groups. There are three basic categories of social networking sites: reuniting, friend-of-a-friend and common interest

Reuniting sites are designed to connect people who have known one another but have lost touch.

Friend-of-a-friend sites are designed to bring together two people who do not know one another but share a common friend.

Common interest sites bring together individuals that share common interests or hobbies.

5. There are three types of search engines: crawler-based search engines, metasearch engines and specialized search engines

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Crawler-based search engines, such as Google, create their listings automatically.

Metasearch engines are programs that automatically submit your search request to several engines simultaneously. The metasearch engines receives the results, eliminates duplicates, orders the hits, and then provides the edited list to you .one of the best known is Dogpile.

Specialized search engines focus on subject-specific Web sites. such as Environment.

Chapter 3

Crossword Puzzle 1. menu 2. worksheet 3. table 4. window 5. DBMS 6. master slide 7. dialog box 8. software suite 9. word wrap 10. sort 11. cell 12. range 13. column 14. database 15. toolbar 16. document 17. slides 18. query

Multiple Choice 1. d 2. c 3. b 4. d 5. d 6. a 7. b 8. b 9. c 10. b Matching 1. j 2. a 3. c 4. h 5. b

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7. i 8. e 9. g 10. f

Open-Ended

1. General-purpose application are widely used in nearly every discipline and occupation. They

include word processors, spreadsheets, database management systems and presentation graphics.

Specialized application includes thousands of other programs that are more narrowly focused on specific disciplines and occupations.

2. Most applications use a GUI, use windows to display information, and have menus to present

commands.

3. A formula is an instruction to calculate or process. Functions are prewritten formulas. A

formula related to what-if analysis is called reca …… 此处隐藏：22929字，全部文档内容请下载后查看。喜欢就下载吧 ……