计算机专业英语PDF电子书下载

Chapter 1 Introduction to Information Technology 1

1.1 Digital Computer 1

1.2 Evolution of Computers 2

1.3 Types of Computers 7

1.4 Data Type 10

1.5 Information Systems 11

Chapter 2 System Software 17

2.1 System Software 17

2.2 Operating Systems 18

2.3 Utilities 21

2.4 Device Drivers 22

2.5 Programming Languages and Translators 23

Chapter 3 Application Software 30

3.1 Application Software 30

3.2 Common Features of Application Software 31

3.3 Browsers 33

3.4 Word Processors 34

3.5 Spreadsheets 35

3.6 Database Management Systems 36

3.7 Presentation Graphics 37

3.8 Software Suites 38

4.1 System Unit 46

Chapter 4 System Unit 46

4.2 System Board 47

4.3 Microprocessor 48

4.4 Memory 50

4.5 System Clock 51

4.6 Bus Lines 51

4.7 Ports and Cables 52

5.1 Input Devices 58

5.2 Keyboards 58

Chapter 5 Input Devices 58

5.3 Mice 59

5.4 Touch Screens 60

5.5 Scanners 61

5.6 Voice Recognition Devices 62

Chapter 6 Output Devices 67

6.1 Output devices 67

6.2 Monitors 68

6.3 Printers 69

6.4 Audio-Output Devices 71

7.2 Floppy Disks 78

Chapter 7 Secondary Storage 78

7.1 Secondary Storage 78

7.3 Hard Disks 80

7.4 Optical Disks 82

7.5 USB Flash Drives 83

Chapter 8 Communication System 89

8.1 Communication System 89

8.2 Communication Media 90

8.3 Connection Devices 93

8.4 Communication Technology 95

8.5 Data Transmission 98

Chapter 9 Computer Network 106

9.1 Computer Network 106

9.2 Network Architecture 106

9.3 Network Topology 108

9.4 Categories of Networks 109

Chapter 10 Internet 115

10.1 The Internet and the Web 115

10.2 Internet Service Providers 117

10.3 Internet Address and Domain 118

10.4 E-mail 119

10.5 Search Engines 123

10.6 Web Utilities 124

Chapter 11 Electronic Commerce and Security 131

11.1 Electronic Commerce 131

11.2 Types of Electronic Commerce 132

11.3 Web Storefronts 133

11.4 Web Auctions 134

11.5 Electronic Data Interchange 135

11.6 Security,Privacy,and Trust in Electronic Commerce 135

12.2 System Analysts 142

Chapter 12 Careers in Information Systems 142

12.1 Careers in Information Systems 142

12.3 Webmasters 143

12.4 Database Administrators 144

12.5 Programmers 144

12.6 Network Managers 144

12.7 Computer Support Specialists 145

12.8 A Look to the Future 146

Appendix 152

World List 152