有用，非常得有用。

词法分析器比较好,运行是输入要分析的程序路径.-lexical analyzer better, it is the operation of procedures to analyze the path.

使用Eclipse开发的词法分析器和语法分析器，其中词法分析器用的自己设计的算法～-use Eclipse development of the lexical analyzer and parser, with the lexical analyzer designed algorithm ~

编译原理词法分析的一个小代码-compiler theory lexical analysis of a small code

朋友给的一个产品的demo程序，说是对学单片机的朋友极其有用-Friend to a product demo program, saying it was for school SCM extremely useful to Friend

Small compiler for Pascal

LL(1)文法使用的是确定的自顶向下的分析技术。LL(1)的含义是：第一个L表明自顶向下分析是从左向右扫描输入串，第2个L表明分析过程中将使用最左推导，1表明只需向右看一个符号便可决定如何推导，即选择哪个产生式(规则)进行推导。-LL (1) grammar using a set top-down analysis techniques. LL (1) the meaning is: the first one L shows a top-down analysis is a scan input string from left to right, the first two L shows the analysis process will be the most left-derivation, one that will be just right to see a sign can decide how to derive, choose what Production (rules) for derivation. LL (1) grammar, followed by calculation of the discriminant needs FIRST sets, FOLLOW sets and SELLECT set, and then determine whether to LL (1) grammar, the last sentence further analysis.

一个简单的C语言子集的编译器,一个简单的C语言子集的编译器-A simple C language subset compiler, a simple C language subset compiler

清华教材后面的pl0程序，这个是用c++写的 附带说明和设计文档- Behind the Qinghua teaching material pl0 procedure, this is the supplementary which writes with c explained and designs the documents

DES算法完整源码与调用方法 DES算法完整源码与调用方法-DES algorithm for complete source code to call methods of DES algorithm with complete source code and call the method

用java实现的简单编译器，希望对大家有用-Achieved with a simple java compiler, and hope for all of us