计算机英语PDF电子书下载

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Lesson One Early Robots 1

Lesson Two What Is A Computer? 16

Lesson Three What Is Hardware and What Is Soft-ware? 35

Lesson Four Input:Taking In Information 51

Lesson Five Output:Presenting the Results 69

Lesson Six Computers Helping at School 86

Lesson Seven Computers in Libraries 101

Lesson Eight Computer and Telephone 118

Lesson Nine Computerized Traffic Control 133

Lesson Ten Treating Disabilities 148

Lesson Eleven Nature of an Operating System 164

Lesson Twelve Making DOS Do Something 179

Lesson Thirteen The Database 196

Lesson Fourteen Early Developments of Computatio-nal Devices 212

Lesson Fifteen Computer Capabilities and Limita-tions 227

Lesson Sixteen The 20-volume Oxford Dictionary Will Now Fit into Your Pocket 246

Appendixes Ⅰ．Word Formation 262

Ⅱ．Reading Materials 273

Vocabulary 291

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