Contents Unit 1 Computer and Its Kind Unit 2 The Early History of Computers Unit 3 Computer Systems Architecture Unit 4 Programs and Programming Unit 5 Computer Languages Unit 6 Assembly Language Unit 7 Computer Security Unit 8 Computer Viruses Unit 9 Software Security Unit 10 Cyber Security Unit 11 Secondary Storage Media Unit 12 Database and Database Management Unit 13 Internet History Unit 14 The Internet and TV Unit 15 Networks and Application Unit 16 Distributed Systems Unit 17 Computer Office System Unit 18 E-Government Unit 19 Speech Recognition Unit 20 VBA--Visual Basic Application Unit 21 Multimedia Unit 22 Virtual Reality Unit 23 Artificial Intelligence Unit 24 Parallel Computer Models Unit 25 Topology and Router Configurations Unit 26 Evolution of Computer Architecture Unit 27 E-Business Unit 28 Distance Education Unit 29 How Green Is Your Computer? Unit 30 Turing Award&ACM Vocabulary Phrases and Expressions Reference Keys