《计算机组成及汇编语言原理》学习第 3 天，p28-p47 总结，总计 20 页。

一、技术总结

1.Virtual Machine

2.stack

3.The fetch-execute Cycle

在控制单元(Control Unit, CU)里面有一个指令寄存器(Instruction Register, IR)和一个程序计数器(Program Counter, PC)。PC保存下次要访问的内存(memory)地址, IR保存从内存地址拿到的数据(pattern)。

二、英语总结(生词：6)

1.compromise

(1)compromise: com-(“together”) + promittere

(2)promitere: pro-(“before”) + mittere(“to release, let go; send, throw”)

vt. to promise together(妥协，折中，让步)。

p30, This is due in part to its being designed from scratch in 1995 instead of inheriting several generations of engineering compromises from earlier versions.

2.paranoid

(1)paranoid: paranoia + -oid(“like, like that of”, 用于构造名词或者形容词)

(2)paranoia: para-(“beside, beyohnd”) + noos(“mind”)

adj. anxious because you do not feel you can trust others(多疑的)。

p30, Since the JVM is software only, a particularly paranoid user can even keep several successive versions so that in case a new version has some subtle and undiscovered bug, she can revert to the old version and still run programs.

3.conical

(1)conical: conic- + -al(“relating to”, 形容词后缀)

(2)conic: having the form of a cone

(3)cone:

c.a shape with a flat, round base and a top that becomes narrower until it forms a point(圆锥体)。

三、其它

阅读基础书籍的时候，有时候可能与我们当前的工作并没有直接的关系，读着读着容易陷入一种虚无感。此时的我们尤其要静下心来，基础是零散的，到后期才能把所有相关的概念串联起来。

四、参考资料

1. 编程

(1) Patrick Juola，《计算机组成及汇编语言原理》：https://book.douban.com/subject/3069889/

2. 英语

(1) Etymology Dictionary：https://www.etymonline.com

(2) Cambridge Dictionary：https://dictionary.cambridge.org

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