Part I Computer and Applications__eol__Chapter 1 Computer and Computer Composition 2__eol__§1 Introduction to Computer 2__eol__§2 Computer Operating System 8__eol__§3 Computer Software (Ⅰ) 14__eol__§4 Computer Software (Ⅱ) 20__eol__Chapter 2 Computer and Connection 25__eol__§1 Computer Virus 25__eol__§2 Network 31__eol__§3 Internet 37__eol__§4 Computer Security 43__eol__Chapter 3 Computer Application 51__eol__§1 E-Commerce 51__eol__§2 Data Communication 58__eol__§3 Artificial Intelligence 62__eol__§4 Software Engineering 67__eol__Chapter 4 Computer Development 74__eol__§1 Development of Computer 74__eol__§2 The Information Society 78__eol__§3 Big Data 81__eol__§4 5G 86__eol__Chapter 5 Communicating with Social Media 91__eol__§1 Blog 91__eol__§2 WeChat 96__eol__§3 QQ 101__eol__Part II Mathematics and Applications__eol__Chapter 6 Elementary Mathematics 108__eol__§1 Mathematics and Language of Mathematics 108__eol__§2 Equations and the Use of Equations 113__eol__§3　Imaginaries and Complex Numbers 117__eol__§4 Radicals 123__eol__§5 Logarithms and Exponent 127__eol__Chapter 7 Geometry 131__eol__§1 Geometry of Plane 131__eol__§2 Plane Analytic Geometry 139__eol__§3 Conic Sections 145__eol__Chapter 8 The Development of the Number System 151__eol__§1 The Development of the Number System (Ⅰ) 151__eol__§2 The Development of the Number System(Ⅱ) 159__eol__§3 The Development of the Number System (Ⅲ) 163__eol__Chapter 9 Differential and Integral Calculus 171__eol__§1　Functions 171__eol__§2　Limits 177__eol__§3 Derivatives 182__eol__§4 Integral Calculus 188__eol__§5 Differential Equation 194__eol__Chapter 10 Applied Mathematics 201__eol__§1 Probability Theory 201__eol__§2 Statistics 207__eol__§3 Data Analysis 213__eol__§4 Mathematical Logic 218__eol__Appendix A Computer Professional English Vocabulary 224__eol__Appendix B Mathematics Professional English Vocabulary 238__eol__Appendix C Optimal Method Professional Vocabulary 250__eol__Appendix D Sample Professional Vocabulary 255__eol__Appendix E Numerical Solution of the Partial Differential Equations __eol__Professional Vocabulary 258__eol__Reference 261