计算机英语 第4版PDF电子书下载

Unit 1 Computer and Computer Science（计算机与计算机科学） 1

Section A Computer Overview 1

Section B What Is Computer Science 11

Section C Categories of Computers 18

Unit 2 Computer Architecture（计算机体系结构） 25

Section A Computer Hardware 25

Section B Components of an Operating System 32

Section C System Organization 39

Unit 3 Computer Language and Programming（计算机语言与编程） 47

Section A Programming Language 47

Section B The Java Language 56

Section C Arrays 63

Unit 4 Software Development（软件开发） 70

Section A Computer Program 70

Section B Model Driven Development 80

Section C Distributed Systems 87

Unit 5 Software Process（软件过程） 95

Section A Software Process Models 95

Section B Software Testing Techniques 105

Section C What Is a Design Pattern 111

Unit 6 Database（数据库） 117

Section A Database Overview 117

Section B Maintaining Database Integrity 127

Section C Data Mining 133

Unit 7 Computer Network（计算机网络） 141

Section A Network Fundamentals 141

Section B A Guide to Network Topology 150

Section C Network Connecting Devices 156

Unit 8 The Internet（因特网） 162

Section A The Internet 162

Section B The Layered Approach to Internet Software 171

Section C Web Basics 178

Unit 9 Mobile and Cloud Computing（移动与云计算） 186

Section A Cloud Computing 186

Section B The Internet of Things 196

Section C Mobile Users 204

Unit 10 Computer Security（计算机安全） 210

Section A Computer Security 210

Section B Antivirus Software 219

Section C Types of Malicious Software 225

Unit 11 Cyberculture（计算机文化） 231

Section A Using E-Mail 231

Section B Designing Websites 241

Section C Social Issues of Computer Networks 250

Unit 12 Electronic Commerce（电子商务） 255

Section A Electronic Commerce 255

Section B Basic Functions of Electronic Commerce Software 265

Section C Online Shopping 272

Glossary（词汇表） 279

Abbreviations（缩略语表） 311