Java® Virtual Machine software（在大部分主要浏览器上已自动安装）用来运行本节的.class文件。Java® plug-in software用来运行本节的Java®文件。许多开发工具可以用来编译和运行本节的.java 文件。
Java® Virtual Machine software (automatically installed in most major web browsers) is required to run the .class files in this section. Java® plug-in software  is required to run the Java® files in this section. Any number of development tools can be used to compile and run the .java files in this section.

点击下载(ZIP - 1.3 MB)（ZIP 文件包括：5 .java 文件，6 .class 文件，3 .jar 文件，2 .html文件和1 .gif 文件。）
Clicker (ZIP - 1.3 MB) (The ZIP contains: 5 .java files, 6 .class files, 3 .jar files, 2 .html files, and 1 .gif file.)
这是一个Applet程序，借此学生用来回答课堂上的问题。
This is an applet that students use to respond to questions in class.

6.090 2005年一月（自由活动月）：Scheme文档
6.090 January (IAP) 2005: Scheme Documentation

《不用惊慌：6.001课程计算机系统的入门指导》
Don't Panic: An Introductory Guide to the 6.001 Computer System
这是Edwin和麻省理工学院Scheme环境使用手册的修订本。该手册是一个对于Scheme编程环境的基本指导手册，专门面向修读6.001课程的学生。强烈推荐学生熟读此书。
This is the revised version of the manual for using Edwin and the MIT Scheme environment. This manual is a basic orientation to the Scheme programming environment, designed for students taking 6.001. It is highly recommended that you familiarize yourself with it.

《麻省理工学院Scheme 指导》
Guide to MIT Scheme
这是麻省理工学院Scheme 的参考手册，其中列举了所有的命令。你不需要非常详细地阅读这个手册，因为6.001课程里面所需的Scheme功能都会在课程和问题集中介绍。
This is the reference manual for MIT Scheme, listing all the commands. You should need to look at this rarely, if at all, for 6.001, since any Scheme features required for the course will be introduced in classes and problem sets.

《算法语言Scheme的修订（5）报告》
Revised (5) Report on the Algorithmic Language Scheme
这是“标准”Scheme语言的形式化定义。对于学生来说，了解一门语言如何被形式化地描述将会很有趣，但是这并不是6.001课程的必要参考。
This is the formal definition of the "standard" Scheme language. It will be interesting for you to look at how a language is described formally, but you should not need to consult this for 6.001.