思维导图 是有效的思维模式，应用于记忆、学习、思考等的思维“地图”，有利于人脑的扩散思维的展开。思维导图已经在全球范围得到广泛应用，新加坡教育部将思维导图列为小学必修科目，大量的500强企业也在学习思维导图，中国应用思维导图也有20多年时间了。
Mind mapping is an effective thinking mode. It is a thinking "map" applied to memory, learning and thinking, which is conducive to the spread of human brain thinking. Mind mapping has been widely used around the world. The ministry of education of Singapore has made mind mapping a compulsory subject in primary schools. A large number of top 500 enterprises are also learning mind mapping. (2020-01-15, Others, 4476KB, 下载0次)
mqtt中文协议文档V3.1，适合研究协议
mqtt protocol v3.1 chinese version (2019-04-05, Others, 829KB, 下载2次)
包括调制，解调，信噪比计算，LDPC码的完整的编译码，各种kalman滤波器的设计。
Includes the modulation, demodulation, signal to noise ratio calculation, Complete codec LDPC code, Various kalman filter design. (2017-05-23, Others, 4KB, 下载1次)
搭建OFDM通信系统的框架，计算目标和海洋回波的功率谱密度,包括调制，解调，信噪比计算。
Build a framework OFDM communication system, Calculating a target and ocean echo power spectral density, Includes the modulation, demodulation, signal to noise ratio calculation. (2017-05-19, Others, 7KB, 下载3次)
Websocket chat room example
Websocket chat room example (2017-03-17, Others, 200KB, 下载1次)
信息论和编码理论
信源熵
单符号离散信源 第一节 信源的数学模型 第二节 信源符号的自信量 第三节 信源的信息熵 第四节 信息熵的代数性质...双输入单输出信道的信道容量 第二节 离散二址接人信道
Information theory and coding theory of single-symbol source entropy discrete source Source Section I of the mathematical model of Section II source symbols of self-confidence volume III Source of information entropy in section IV of the algebraic properties of information entropy ... dual-input single- output channel of the channel capacity of discrete Second Section II Access Channel (2008-02-14, Others, 135KB, 下载24次)
AT89S8252中文资料，由于笔者英文水平有限，请各位大虾指正
AT89S8252 Chinese data, the standard of English is limited as a result of the author, please correct me prawns (2007-11-15, Others, 672KB, 下载26次)
S3C2440中文手册,各章分别翻译rlfn
S3C2440 Chinese manual chapters were translated rlfn (2007-11-14, Others, 2241KB, 下载735次)