How Might a mouse search a Maze for Cheese? heese · State Space Search? As a Constraint Satisfaction Problem? Goal-directed Planning As a rule or production System? What is missing? Ideas in this lecture Objective is to accumulate rewards rather than goal states Task is to generate policies for how to act in all situations rather than a plan for a single starting situation

• Implementation of a simple allocator • Explicit Free List • Segregated Free List • Suggested reading

➢计算机检测系统基本组成框图 ➢传感器选择 ➢多路模拟开关 ➢A/D转换器 ➢D/A转换器 ➢取样保持电路

• 串行通信的基本概念和常用术语； • 可编程串行通信接口片8251A的基本结构； • 8251A的编程应用

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

9.1 可编程并行输入/输出接口芯片8255A 9.2 可编程计数器/定时器8253 9.3 可编程串行输入/输出接口芯片8251A

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

1 8255A 简介 2 8255A 的引脚及结构功能 3 8255A的控制字及工作方式 4 8255A 与系统总线的连接 5 8255A 的应用设计

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

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