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)
§1 Treatment of variation method for the H2+ ion §2 Molecular orbital theory and diatomic molecules §3 Valence bond(VB) theory for the hydrogen molecule and the comparison VB theory with Molecular Orbital theory(MO)