Part I Knowledge Points（第一部分 知识点）
Text 1 Introduction to Information Technology
1.1 Computer Literacy
1.2 Information System
1.3 Information Technology
1.4 Information and Communications Technology
1.5 What is a Computer
1.6 Components of a Computer
1.6.1 Hardware
1.6.2 Software
1.7 Categories of Computers
1.7.1 Supercomputers
1.7.2 Mainframe Computers
1.7.3 Midrange Computers
1.7.4 Minicomputers
1.7.5 Personal Computers
Text 2 System Unit
2.1 Central Processing Unit (CPU)
2.1.1 Control Unit
2.1.2 Arithmetic and Logic Unit
2.1.3 Registers
2.1.4 Characteristics of CPU
2.2 Memory
2.2.1 Computer Memory Cell
2.2.2 Types of Memory
2.2.3 RAM
2.2.4 Cache
2.2.5 ROM
2.2.6 Virtual Memory
2.3 Ports and Connectors
2.3.1 Serial Ports
2.3.2 Parallel Ports
2.3.3 SCSI Ports
2.3.4 USB Ports
2.3.5 PC Card Slots
Text 3 Input and Output
3.1 Input
3.1.1 Input Devices
3.1.2 Keyboards
3.1.3 Pointing Devices
3.1.4 Voice Input
3.1.5 Digital Cameras
3.1.6 Video Input
3.1.7 Scanning and Reading Devices
3.1.8 Terminals
3.1.9 Biometric Input
3.2 Output
3.2.1 Output Devices
3.2.2 Printers
3.2.3 Speakers and Headphones
3.2.4 Other Output Devices
3.2.5 Important Concepts
Text 4 Secondary Storage
4.1 Floppy Disks
4.2 Hard Disks
4.2.1 Formatting
4.2.2 Capacity
4.2.3 Rotational Speed
4.2.4 Access Time
4.2.5 Characteristics of a Hard Disk
4.2.6 Maintaining Data Stored on a Disk
4.2.7 Features of Floppy Disks and Hard Disks
4.3 Flash Memory
4.3.1 USB Flash Drives
4.3.2 Smart Cards
4.4 Optical Storage Technology
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Part II Reference Version（第二部分 参考译文）
Part III Exercises（第三部分 习题与思考）
Part IV Labs（第四部分 实践指导）
Part V Revisions （第五部分 复习题）
参考文献
