操作系统概念

说明：  C 语言入门最最经典的一本，作者是 K&R，其中的 R （Dennis M.Ritchie）为 C 语言设计者之一。(The most classic introduction to C language is by K&R, among which R (Dennis M. Ritchie) is one of the C language designers.)

up for dowload document

一款C语言代码方法搜索手册，方便写代码的字典(A C language code method search manual, easy to write code dictionary)

说明：  本书是外文计算机图形学的中文翻译，主要讲计算机图形学的基本原理与方法，是我们上课时用的教材。(the book is a foreign language computer graphics in Chinese translation, the main speaker computer graphics the basic principles and methods we use in class teaching materials.)

Homekit accessory specification r13

wind turbine with DFIG simulink

LED, as you can see,

说明：  基于核主成分分析法的GA_BP神经网络短期用电负荷预测，很不错的文章研究遗传算法，BP神经网络，核主成分(GA_BP Neural Network Based on Kernel Principal Component Analysis (KPCA) for short-term load forecasting. This paper studies genetic algorithm, BP Neural Network and Kernel Principal Component.)

pcb布线技巧内含6张pdf，讲述数字模拟混合布线技巧(pcb routing technique includes six pdf, talk about digital and analog hybrid routing technique)

说明：  很好的python基础书籍，适合入门，推荐给大家(python learning book)