本书概括地介绍了计算机与信息技术的常见概念和术语、主要应用领域及其对社会的影响。本书由9章组成，主要内容包括：信息技术和因特网概述，因特网、万维网与电子商务，应用软件，系统软件，硬件系统部件，输入输出设备，二级存储，通信与网络，隐私、安全与伦理等。
本书原书自1989年以来每年都出一次新版，主要用作英语国家的计算机导论性课程教材。在我国曾经出版过本书的几个版本，并作为教材推荐给各高等学校使用，得到了用书学校师生的好评。本书是最新版，内容做了更新和补充，突出知识的先进性、系统性和教学的实践性，并提供更为丰富的习题和在线教学资源。
本书概括地介绍了计算机与信息技术的常见概念和术语、主要应用领域及其对社会的影响。本书由9章组成，主要内容包括：信息技术和因特网概述，因特网、万维网与电子商务，应用软件，系统软件，硬件系统部件，输入输出设备，二级存储，通信与网络，隐私、安全与伦理等。
本书内容丰富，叙述简练，形式生动，英语语言规范，教学资源丰富，比较全面地覆盖了计算机与信息技术领域中的基本名词和术语，尤其是目前十分流行和最新的一些概念和词汇。因此，本书既有助于读者了解和掌握计算机及信息技术基础知识，又便于他们掌握相应的英文词汇，提高专业英语的阅读能力。
本书既可作为计算机、软件工程、信息管理及相关专业“计算机导论”双语课程的教材，也可作为相关专业“计算机专业英语”课程的教材。Timothy J. O’Leary和Linda I. O’Leary生活在美国西南部，多年来从事信息技术教学和培训工作。Timothy J. O’Leary具有三十多年的课堂教学经验，曾先后任教于斯塔克州立技术学院、罗彻斯特理工学院，目前是亚利桑那州立大学荣休教授。Linda I. O’Leary是一位技术顾问和企业导师，曾在亚利桑那州立大学担任技术顾问，还曾为摩托罗拉、英特尔、霍尼韦尔、AT&T这些IT大企业以及不同的社区学校开发过培训资料和课程。Daniel A. O''Leary是Timothy J. O’Leary和Linda I. O’Leary的儿子，他最近完成了电子工程的博士学位，主要从事IT技术方面的教学和咨询工作。
计算机科学及应用
本书原书自1989年以来每年都出一次新版，主要用作英语国家的计算机导论性课程教材。在我国曾经出版过本书的几个版本，并作为教材推荐给各高等学校使用，得到了用书学校师生的好评。本书是最新版，内容做了更新和补充，突出知识的先进性、系统性和教学的实践性，并提供更为丰富的习题和在线教学资源。
本书概括地介绍了计算机与信息技术的常见概念和术语、主要应用领域及其对社会的影响。本书由9章组成，主要内容包括：信息技术和因特网概述，因特网、万维网与电子商务，应用软件，系统软件，硬件系统部件，输入输出设备，二级存储，通信与网络，隐私、安全与伦理等。
本书内容丰富，叙述简练，形式生动，英语语言规范，教学资源丰富，比较全面地覆盖了计算机与信息技术领域中的基本名词和术语，尤其是目前十分流行和最新的一些概念和词汇。因此，本书既有助于读者了解和掌握计算机及信息技术基础知识，又便于他们掌握相应的英文词汇，提高专业英语的阅读能力。
本书既可作为计算机、软件工程、信息管理及相关专业“计算机导论”双语课程的教材，也可作为相关专业“计算机专业英语”课程的教材。
[美]蒂莫西 J. 奥利里（Timothy J. O'Leary） 琳达 I. 奥利里（Linda I. O'Leary） 丹尼尔 A. 奥利里（Daniel A. O'Leary） 著：
Timothy J. O’Leary和Linda I. O’Leary生活在美国西南部，多年来从事信息技术教学和培训工作。Timothy J. O’Leary具有三十多年的课堂教学经验，曾先后任教于斯塔克州立技术学院、罗彻斯特理工学院，目前是亚利桑那州立大学荣休教授。Linda I. O’Leary是一位技术顾问和企业导师，曾在亚利桑那州立大学担任技术顾问，还曾为摩托罗拉、英特尔、霍尼韦尔、AT&T这些IT大企业以及不同的社区学校开发过培训资料和课程。Daniel A. O'Leary是Timothy J. O’Leary和Linda I. O’Leary的儿子，他最近完成了电子工程的博士学位，主要从事IT技术方面的教学和咨询工作。
1 INFORMATION TECHNOLOGY, THE INTERNET, AND YOU 2
Introduction 4
Information Systems 4
People 6
Software 7
System Software 7
Application Software 8
Making IT work for you: Free Antivirus Program 9
Hardware 10
Types of Computers 10
Personal Computer Hardware 11
Data 13
Connectivity and the Mobile Internet 14
Careers in IT 15
A Look to the Future: Using and Understanding Information Technology 16
Visual Summary 17
Key Terms 20
Multiple Choice 21
Matching 22
Open-Ended 22
Discussion 23
Photo Credits 25
2 THE INTERNET, THE WEB, AND ELECTRONIC COMMERCE 26
Introduction 28
The Internet and the Web 28
Making IT work for you: Online Entertainment 30
Internet Access 32
Providers 32
Browsers 32
Web Utilities 34
Plug-ins 34
Filters 34
File Transfer Utilities 35
Internet Security Suites 36
Communication 37
E-mail 37
Messaging 38
Social Networking 39
Blogs, Microblogs, Webcasts, Podcasts, and Wikis 41
Search Tools 43
Search Engines 43
Specialized Search Engines 43
Content Evaluation 43
Electronic Commerce 44
Security 45
Cloud Computing 46
The Internet of Things 47
Careers in IT 48
A Look to the Future: Your Car’s Dashboard as a Powerful, Internet-Connected Computing Device 49
Visual Summary 50
Key Terms 54
Multiple Choice 55
Matching 56
Open-Ended 56
Discussion 57
Photo Credits 59
3 APPLICATION SOFTWARE 60
Introduction 62
Application Software 62
User Interface 62
Common Features 64
General-Purpose Applications 64
Word Processors 64
Spreadsheets 67
Presentation Graphics 69
Database Management Systems 70
Specialized Applications 70
Graphics 70
Video Game Design Software 73
Web Authoring Programs 73
Other Specialized Applications 74
Mobile Apps 74
Apps 74
App Stores 75
Software Suites 76
Office Suites 76
Cloud Computing 76
Specialized and Utility Suites 76
Careers in IT 77
Making IT work for you: Google Docs 78
A Look to the Future: Next-Generation User Interfaces 79
Visual Summary 80
Key Terms 83
Multiple Choice 84
Matching 85
Open-Ended 85
Discussion 86
Photo Credits 87
4 SYSTEM SOFTWARE 88
Introduction 90
System Software 90
Operating Systems 91
Functions 91
Features 92
Categories 93
Mobile Operating Systems 94
Desktop Operating Systems 95
Windows 95
Mac OS 95
UNIX and Linux 96
Virtualization 96
Utilities 97
Making IT work for you: Mac OS X Activity Monitor 98
Windows Utilities 100
Utility Suites 103
Careers in IT 104
A Look to the Future: Self-Healing Computers Could Mean an End to Computer Crashes and Performance Problems 105
Visual Summary 106
Key Terms 109
Multiple Choice 110
Matching 111
Open-Ended 111
Discussion 112
Photo Credits 113
5 THE SYSTEM UNIT 114
Introduction 116
System Unit 116
Desktops 116
Laptops 116
Tablets 117
Smartphones 118
Wearable Computers 118
Components 118
System Board 119
Microprocessor 120
Microprocessor Chips 121
Specialty Processors 121
Memory 122
RAM 122
ROM 122
Flash Memory 122
Expansion Slots and Cards 123
Bus Lines 124
Expansion Buses 124
Ports 125
Standard Ports 126
Specialized Ports 126
Cables 126
Making IT work for you: Tv Tuners 127
Power Supply 128
Electronic Data and Instructions 129
Numeric Representation 129
Character Encoding 129
Careers in IT 130
A Look to the Future: Chips inside Your Brain 131
Visual Summary 132
Key Terms 135
Multiple Choice 136
Matching 137
Open-Ended 137
Discussion 138
Photo Credits 139
6 INPUT AND OUTPUT 140
Introduction 142
What Is Input 142
Keyboard Entry 142
Keyboards 143
Pointing Devices 144
Mouse 144
Touch Screen 144
Game Controllers 144
Stylus 145
Scanning Devices 145
Optical Scanners 146
Card Readers 146
Bar Code Readers 146
RFID Readers 147
Character and Mark Recognition Devices 147
Image Capturing Devices 147
Digital Cameras 148
Webcams 148
Audio-Input Devices 148
Voice Recognition Systems 148
What Is Output 149
Monitors 149
Features 149
Flat-Panel Monitors 150
Curved Monitors 150
E-book Readers 150
Other Monitors 151
Making IT work for you: E-Books 152
Printers 153
Features 153
Inkjet Printers 153
Laser Printers 154
3D Printers 154
Other Printers 154
Audio-Output Devices 155
Combination Input and Output Devices 155
Headsets 155
Multifunctional Devices 156
Telephones 156
Drones 156
Robots 156
Making IT work for you: Skype 157
Virtual Reality Headgear and Gloves 159
Ergonomics 159
Portable Computers 161
Careers in IT 161
A Look to the Future: Augmented Reality Displays 162
Visual Summary 163
Key Terms 167
Multiple Choice 168
Matching 169
Open-Ended 169
Discussion 170
Photo Credits 171
7 SECONDARY STORAGE 172
Introduction 174
Storage 174
Hard Disks 175
Internal Hard Disk 176
External Hard Drives 176
Performance Enhancements 176
Solid-State Storage 178
Solid-State Drives 178
Flash Memory Cards 178
USB Drives 178
Optical Discs 179
Cloud Storage 180
Making IT work for you: Cloud Storage 182
Mass Storage Devices 184
Enterprise Storage System 184
Storage Area Network 185
Careers in IT 185
A Look to the Future: Next-Generation Storage 186
Visual Summary 187
Key Terms 190
Multiple Choice 190
Matching 191
Open-Ended 192
Discussion 192
Photo Credits 193
8 COMMUNICATIONS AND NETWORKS 194
Introduction 196
Communications 196
Connectivity 196
The Wireless Revolution 197
Communication Systems 197
Communication Channels 198
Physical Connections 198
Wireless Connections 199
Connection Devices 200
Modems 200
Connection Service 200
Data Transmission 202
Bandwidth 202
Protocols 202
Making IT work for you: Mobile Internet 203
Networks 204
Terms 204
Network Types 206
Local Area Networks 206
Home Networks 206
Wireless LAN 207
Personal Area Network 207
Metropolitan Area Networks 208
Wide Area Networks 208
Network Architecture 208
Topologies 209
Strategies 210
Organizational Networks 210
Internet Technologies 211
Network Security 211
Careers in IT 212
A Look to the Future: Telepresence Lets You Be There without Actually Being There 213
Visual Summary 214
Key Terms 217
Multiple Choice 218
Matching 219
Open-Ended 219
Discussion 220
Photo Credits 221
9 PRIVACY, SECURITY, AND ETHICS 222
Introduction 224
eople 224
Privacy 224
Large Databases 225
Private Networks 227
The Internet and the Web 227
Online Identity 230
Major Laws on Privacy 230
Security 231
Cybercrime 231
Measures to Protect Computer Security 235
Ethics 238
Making IT Work for You: Cloud-Based Backup 239
Copyright and Digital Rights Management 240
Careers in IT 241
A Look to the Future: The End of Anonymity 242
Visual Summary 243
Key Terms 246
Multiple Choice 247
Matching 248
Open-Ended 248
Discussion 249
Photo Credits 251
The Evolution of the Computer Age 252
Glossary 263
