前言 使用说明 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 PDA Prizefight: Palm vs. Pocket PC 18 Unit 2 Computer Architecture(计算机体系结构) 29 Section A Computer Hardware 29 Section B Components of an Operating System 36 Section C System Organization 43 Unit 3 Computer Language and Programming(计算机语言与编程) 51 Section A Programming Language 51 Section B The Java Language 60 Section C Arrays 67 Unit 4 Software Development(软件开发) 74 Section A Computer Program 74 Section B Microsoft .NET vs. J2EE 84 Section C Distributed Systems 92 Unit 5 Software Process(软件过程) 100 Section A Software Process Models 100 Section B Model Driven Development 110 Section C What Is a Design Pattern 117 Unit 6 Database(数据库) 123 Section A Database Overview 123 Section B Maintaining Database Integrity 133 Section C .NET Data Access Architecture 139 Unit 7 Computer Communications(计算机通信) 149 Section A Telecommunications and Computer 149 Section B Communicating with Other Devices 156 Section C ATM and Its Advantages 163 Unit 8 Computer Network(计算机网络) 171 Section A Network Fundamentals 171 Section B A Guide to Network Topology 180 Section C Network Connecting Devices 186 Unit 9 The Internet(因特网) 192 Section A The Internet 192 Section B The Layered Approach to Internet Software 201 Section C Web Basics 208 Unit 10 Cyberculture(计算机文化) 216 Section A Using E-Mail 216 Section B Designing Websites 226 Section C Web 2.0 and Its Economic Implications 235 Unit 11 Electronic Commerce(电子商务) 243 Section A Electronic Commerce 243 Section B Basic Functions of Electronic Commerce Software 252 Section C Online Shopping 259 Unit 12 Computer Security(计算机安全) 266 Section A Computer Security 266 Section B Antivirus Software 275 Section C Through a Hacker s Eyes 281 Glossary(词汇表) 287 Abbreviations(缩略语表) 317