在这个目录下，我们可以找到十一个文件。文件N之间的关系。
资 源 简 介
In this directory, we can find the eleven files. The relationship between file name and the number of program written in the book is shown in as follows.
文 件 列 表
multiple access protocols
carriersense.m
distance.m
graph.m
inhibitsense.m
main.m
npcsma.m
paloha.m
position.m
README-Chap6.txt
saloha.m
snpisma.m
theorys.m
