Computer System Operation A modern computer system System boot Interrupt I/O Structure I/O Structure I/O operation DMA Storage Structure and Storage Hierarchy Storage Structure Storage hierarchy Hardware Protection Hardware Protection General System Architecture General System Architecture system call Computing Environments

2.1 协议天球坐标系 Conventional Celestial Sphere Coordinate System 2.2 协议地球坐标系 Conventional Earth Coordinate System 2.3 WGS-84坐标系和我国的大地坐标系 World Geodetic System-1984 and our National Geodetic Coordinate System 2.4 时间系统 Time System 2.5 北斗坐标系统和时间系统 Coordinate and Time System of BDS

2.1 Discrete-time signals:sequences 2.1.1 Definition 2.1.2 Classification of sequence 2.1.3 Basic sequences 2.1.4 Period of sequence 2.1.5 Symmetry of sequence 2.1.6 Energy of sequence 2.1.7 The basic operations of sequences 2.2 Discrete-time system 2.2.1 Definition：input-output description of systems 2.2.2 Classification of discrete-time system 2.2.3 Linear time-invariant system（LTI） 2.2.4 Linear constant-coefficient difference equation 2.2.5. Direct implementation of discrete-time system 2.3 Frequency-domain representation of discrete-time signal and system 2.3.1 definition of fourier transform 2.3.2 frequency response of system 2.3.3 properties of fourier transform

System compensation is the process of designing a controller that will produce an acceptable transient response while maintaining a desired steady-state accuracy .These two design objectives are conflicting in most systems ,since small errors imply high gains reduce system stability and may even drive the system unstable .Compensation may be thought of as the process of increasing the stability of a system without reducing its accuracy below minimum acceptable standards

• 3.4 Process Control • 3.5 Execution of the Operating System • 3.6 Unix SVR4 Process Management • 3.7 Linux Process management system calls

INTRODUCTION THE ALIMENTARY SYSTEM THE RESPIRATORY SYSTEM THE URINARY SYSTEM THE GENITAL SYSTEM THE ENDOCRINE SYSTEM

INTRODUCTION THE ALIMENTARY SYSTEM THE RESPIRATORY SYSTEM THE URINARY SYSTEM THE GENITAL SYSTEM THE ENDOCRINE SYSTEM

1.1 What is an operating system (定义) 1.2 History of operating systems (历史) 1.3 The operating system zoo (分类） 1.4 Computer hardware review（底层硬件） 1.5 Operating system concepts（ 概念） 1.6 System calls（系统调用） 1.7 Operating system structure （结构）

System compensation is the process of designing a controller that will produce an acceptable transient response while maintaining a desired steady-state accuracy .These two design objectives are conflicting in most systems ,since small errors imply high gains reduce system stability and may even drive the system unstable .Compensation may be thought of as the process of increasing the stability of a system without reducing its accuracy below minimum acceptable standards

Working Principle of Braking System； Composition of Braking System； Types of Braking System； Types ,Characteristics & Application of Drum Brake & Disc Brake； Operation Method of Braking System； Function & Working Principle of Braking Force Regulator