7.1 数/模（D/A）转换 7.2 模/数（A/D）转换 7.3 数/模、模/数通道设计

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

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

6.1 可编程并行I/O接口8255A 6.2 串行通信和串行I/O接口 6.3 可编程串行I/O接口8251A

5.1 中断控制器8259A 5.2 DMA控制器8237A 5.3 定时/计数器8253

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

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:

Economy. . . . . . The word economy comes from a Greek word for “one who manages a household

8.1 Some Basics 273 quence in the cells DNA. A segment of a DNA molecule 8.2 Nucleic Acid Structure 275 that contains the information required for the synthesis 8.3 Nucleic Acid Chemistry 291 8.4 Other Functions of Nucleotides 300 the only known func- Watson

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