目　录

Unit 1　Recognize Computer　1
Text 1　Guess What It Is　1
Text 2　What Does a Computer Look Like 　4
Text 3　Do You Know Them 　7
Text 4　Generations of Electronic Computer　12

Unit 2　Use Computer　23
Text 1　Buy a Notebook　23
Text 2　Introduction of a Window　26
Text 3　Learning Computer Knowledge All by Yourself　29
Text 4　Kinds of Computers　33

Unit 3　Computer System　43
Text 1　Computer Organization　43
Text 2　System Bus　48
Text 3　Instruction Cycle　51
Text 4　Design Goals of Computer Architecture　55

Unit 4　Computer Hardware　62
Text 1　CPU　62
Text 2　Motherboard　66
Text 3　Storage　71
Text 4　Printers　75

Unit 5　Operating System　84
Text 1　What Is an Operating System　84
Text 2　Types of Operating Systems　87
Text 3　Setting Up Windows　92
Text 4　Windows XP　96

Unit 6　Computer Virus　105
Text 1　Computer Virus　105
Text 2　Virus Behavior　108
Text 3　How to Protect Your Data　112
Text 4　Number of Viruses　117

Unit 7　Multimedia　124
Text 1　What Is Multimedia 　124
Text 2　What Does the Multimedia Actually Mean 　127
Text 3　Uses for Multimedia　131
Text 4　Multimedia Technology　135

Unit 8　Computer Networking　143
Text 1　Welcome to the Web　143
Text 2　Internet　146
Text 3　Hackers Are Enemy Number One on the Internet　152
Text 4　Local Area Network　156

Unit 9　Computer Software　165
Text 1　What Is the Computer Software 　165
Text 2　Relationship to Hardware and Data　169
Text 3　Categories of Computer Software　173
Text 4　Copyright Infringement of Software　177

Unit 10　Programming Languages　185
Text 1　Computer Languages　185
Text 2　Object-Oriented Programming　189
Text 3　Assembly Language　193
Text 4　High-level Language　198