完整版MATLAB GUI设计学习手记第二版

介绍使用python处理excel文件，教程语言为英语。(working excel files in python)

GTD (Getting Things Done) 一書的workbook(GTD (Getting Things Done) book 1 workbook)

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说明：  自动控制原理第六版胡寿松主编课后习题答案详解(The sixth edition of automatic control principle)

Lex yac usage and programming guide

说明：  C

matlab中文教程,matlab基础教程，起步教程(MATLAB basic course, suitable for beginners for reference, including a large number of examples)

说明：  boost asio c++ 网络编程第二版英文原版pdf. 亲自制作，和其它地方找到的格式转换是不一样(boost asioo c++ network programming 2nd)

蓝桥杯题目操作格子源代码，关键词：线段树(Blue Bridge Cup title operating plaid source code)

说明：  锁相的意义是相位同步的自动控制,能够完成两个电信号相位同步的自动控制闭环系统叫做锁相环,简称PLL. 3种软件锁相的方法：指针归零法，先调频后调相法，调频调相同时进行法。(The meaning of phase-locked is the automatic control of phase synchronization. The automatic control closed-loop system that can complete the phase synchronization of two electrical signals is called PLL The 3 method of software phase-locked: pointer to zeros, first phase modulation after frequency modulation, frequency modulation phase modulation at the same time.)