Part I Computer and ApplicationsChapter 1 Computer and Computer Composition2§1 Introduction to Computer2§2 Computer Operating System8§3 Computer Software (Ⅰ)14§4 Computer Software (Ⅱ)20Chapter 2 Computer and Connection25§1 Computer Virus25§2 Network31§3 Internet37§4 Computer Security43Chapter 3 Computer Application51§1 E-Commerce51§2 Data Communication58§3 Artificial Intelligence62§4 Software Engineering67Chapter 4 Computer Development74§1 Development of Computer74§2 The Information Society78§3 Big Data81§4 5G86Chapter 5 Communicating with Social Media91§1 Blog91§2 Wechat96§3 QQ101Part II Mathematics and ApplicationsChapter 6 Elementary Mathematics108§1 Mathematics and Language of Mathematics108§2 Equations and the Use of Equations113§3 Imaginaries and Complex Numbers117§4 Radicals123§5 Logarithms and Exponent127Chapter 7 Geometry131§1 Geometry of Plane131§2 Plane analytic Geometry139§3 Conic Sections145Chapter 8 The Development of the Number System151§1 The Development of the Number System (Ⅰ)151§2 The Development of the Number System(Ⅱ)159§3 The Development of the Number System (Ⅲ)163Chapter 9 Differential and Integral Calculus171§1 Functions171§2 Limits177§3 Derivatives182§4 Integral Calculus188§5 Differential Equation194Chapter 10 Applied Mathematics201§1 Probability Theory201§2 Statistics207§3 Data Analysis213§4 Mathematical Logic218Appendix A Computer Professional English Vocabulary224Appendix B Mathematics Professional English Vocabulary238Appendix C Optimal Method Professional Vocabulary250Appendix D Sample Professional Vocabulary255Appendix E Numerical Solution of the Partial Differential Equations Professional Vocabulary258Reference 261