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汇编语言 2.4 2.5 2.6 物理地址与8086CPU
2.4 物理地址所有的内存单元构成的存储空间使一个一维的线性空间,每一个内存单元在这个空间中都有唯一的地址,我们称这个唯一的地址为物理地址。2.5 16位结构的CPU8086CPU的上一代CPU(8080、8085)等是8位机,而8086位16位机,即16位结构的CPU。其具有以下特点: 运算器一次最多可以处理16位的数据 寄存器的最大宽度为16位 寄存器和运算器之间的通路为16位8086内部,能够一次性处理、传输、存储的信息的最大长度是16位的。内存单元的地址在送上地址总线之前,必...…
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汇编语言 2.1 2.2 通用寄存器, 与几条简单的汇编指令
汇编 第二章:一个典型的CPU由运算器、控制器、寄存器等器件构成,这些器件靠内部总线相连。相对的,外部总线实现CPU和主板上其他器件的联系。 运算器进行信息处理寄存器进行信息储存控制器控制各种器件进行工作内部总线连接各种器件,在它们之间进行数据的传送2.1 通用寄存器8086寄存器CPU的所有寄存器都是16位的,可以存放两个字节(Byte)。AX、BX、CX、DX这四个寄存器通常用来存放一般性数据,被通常成为通用寄存器。以AX为例。AX可以分为AH和AL,其为两个可独立使用的8位寄存器。...…
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汇编语言第一章总结
汇编 第一章 小结: 汇编是及其指令的助记符 每一种CPU都有自己的汇编指令集 CPU可以直接使用的信息在存储器中存放(存储器就是内存,数据交换的地方) 在存储器中指令和数据没有任何区别,都是二进制信息,放在不同的路上 存储单元从零开始顺序编号 一个存储单元可以存储8个bit(b, 位),即8位二进制数 1B = 8b, 1KB = 1024B, 1MB = 1024KB, 1GB = 1024MB 每个CPU芯片都有许多管脚,与总线相连,也可以说,这些管脚引出总线。一个C...…
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LA3.2 The Nullspace of A
The Nullspace of A The nullspace $N(A)$ consists of all solutions to $Ax=0$. These vectors $x$ are in $R^n$.The solution vectors $x$ have $n$ components. They are vectors in $R^n$, so the nullspace is a subspace of $R^n$. The $C(A)$ is a subspace...…
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PCB1.1 - Squence unpacking, Star syntax, deque, yield, Keeping the Last N Items, Finding the Largest or Smallest N Items, and Implementing a Priority Queue
About the titlePython - Cookbook study CHAPTER 1 - Data Strucutres and Algorithms - PCB1 for shortSomething to say before everything beginsI plan to have a python cookbook study (David Beazley & Brian K. Jones). Aim to have a deeper understand...…
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Python - Binding and the Static, Class, Abstract Method
Something about parameter bindingFunction is stored as the attribute of class, as you can see in the code followed.class Pizza(object): def __init__(self, size): self.size = size def get_size(self): return self.sizeprint(Pizza....…
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Vector Spaces and Subspaces
Summarized from ‘Introduction to Linear algebra’ from Gilbert Strang.Definition of The Vector SpacesVector space is a very important concept, which is denoted by $R^1, R^2, R^3 … R^n$, which consists of a a whole collection of vectors. For example...…
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Inverse Matrices
Something to note The matrix A is invertible if there exists a matrix $A^{-1}$Two-sided inverse: $$A^{-1}\cdot A = I$$ Not all matrices have inverses. There are six note: The inverse exists if and only if elimination produces n pivots (row excha...…
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The Adjacency Matrix
Define an Adjacency MatrixHere, I want to define a matrix to show the graph or a network which has four nodes. As you can see in the Figure.This is a 0-1 matrix with sij = 1 when nodes i and j are connectd by an edge.$$S_{ij} = \begin{bmatrix} 0...…
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Restart My Calculus Learning
I have decided!I have decided to restart my Calculus learning. Reference book is ‘Introduction to Calculus and Analysis’ by Richard Courant and Fritz John. IntroductionHow to represent rational numbersFor better understand numbers, we need to repr...…