科技英语阅读教程 下PDF电子书下载

Unit Thirteen 144

Text A Computer:Getting Started 144

Text B History of Information Age 152

Unit Fourteen 156

Text A The Processor 156

Text B Twenty—first Century Science and Technology 164

Unit Fifteen 169

Text A Main Memory 169

Text B How Computers Are Changing Our World 177

Unit Sixteen 181

Text A Secondary Storage 181

Text B The age of automation 190

Unit Seventeen 195

Text A Input and Output 195

Text B The Social Consequence of Engineering 204

Unit Eighteen 208

Text A The Operating System 208

Text B The Advances in Biomechanics and its Prospect 219

Unit Nineteen 223

Text A Programming Language 223

Text B Crime Busting Computers 231

Unit Twenty 235

Text A Multimedia Technology 235

Text B Machines with and without Freedom 244

Unit Twenty-one 251

Text A Computer Networks 251

Text B Robot 261

Unit Twenty-two 267

Text A Computer Security 267

Text B A Robot about the house 277

Unit Twenty-three 281

Text A What's an Intranet? 281

Text B Office Automation 298

Unit Twenty-four 293

Text A Modern Cryptography 293

Text B Research Report for Business and Technical Writing 300