Part I Listening Comprehension (20 minutes) Section A 1. A) It was misleading. B) It was enjoyable. C) It was rather boring. D) It was just so-so

◼ 8255A的内部结构、工作方式和编程 ◼ 8255A的控制字、工作方式及应用

Main Purpose Study an algorithm: – Translating a regular expression into a DFA via NFA

Module 7 Higher -Order Systems (1 hour) TF in Evans or Bode form Approximate a higher order system with a first or second order one Effect of zeros and poles on the transient response Origins of zeros

10.1 概述 10.2 数/模（D/A）转换器 10.3 模/数（A/D）转换器 10.4 采样保持电路 10.5 多路转换模拟开关

数字通信系统具有许多优点。然而许多信源输出都是模拟信号。 若要利用数字通信系统传输模拟信号,一般需三个步骤: (1)把模拟信号数字化,即模数转换(A/D); (2)进行数字方式传输; (3)把数字信号还原为模拟信号,即数模转换(D/A) 由于A/D或D/A变换的过程通常由信源编(译)码器实现,所以我们把发端 的A/D变换称为信源编码,而收端的D/A变换称为信源译码,如语音信号的数字 化叫做语音编码

The idea of Recursive-Descent Parsing Viewing the grammar rule for a non-terminal A as a definition for a procedure to recognize an A The right-hand side of the grammar for A specifies the structure of the code for this procedure The Expression Grammar:

8.3.1 A/D转换器概述 8.3.2 A/D转换器的主要技术指标 8.3.3 AT89C51单片机与ADC0809接口应用 8.3.4 AT89C51与MC14433接口应用 8.4.1 D/A转换器的主要技术指标 8.4.2 D/A转换器与单片机的接口

上海交通大学：《计算机组成原理 Computer Organization》课程教学资源（PPT课件讲稿）Chapter 4A The Processor, Part A

Semantic analysis Parsing only verifies that the program consists of tokens arranged in a syntactically-valid combination, we now move on to semantic analysis, where we delve deeper to check whether they form a sensible set of instructions in the programming language