西北工大大学软件与微电子学院软件工程专业数据库实验课SQL语言详解
2022-09-19 22:00:09 202KB 西工大 西工大_数据 西工大_数据库
一个介绍Verilog HDL的经典资料,觉得很有用,与大家共同享用。
2022-09-19 14:00:12 178KB golden verilog
根据PDF官方指南,理解PDF格式可以从四个方面下手——Objects(对象)、File structure(物理文件结构)、Document structure(逻辑文件结构)、Content streams(内容流)。 对象 物理文件结构 整体上分为文件头(Header)、对象集合(Body)、交叉引用表(Xref table)、文件尾(Trailer)四个部分,结构如图。修改过的PDF结构会有部分变化。 文件头 文件头是PDF文件的第一行,格式如下: %PDF-1.7 这是个固定格式,表示这个PDF文件遵循的PDF规范版本,解析PDF的时候尽量支持高版本的规范,以保证支持大多数工具生成的PDF文件。1.7版本支持1.0-1.7之间的所有版本。 对象集合 这是一个PDF文件最重要的部分,文件中用到的所有对象,包括文本、图象、音乐、视频、字体、超连接、加密信息、文档结构信息等等,都在这里定义。格式如下: 一个对象的定义包含4个部分:前面的2是对象序号,其用来唯一标记一个对象;0是生成号,按照PDF规范,如果一个PDF文件被修改,那这个数字是累加的,它和对象序号一起标记是原始对象.
2022-09-16 21:36:40 20.45MB 文档资料 PDF PDF规范
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Quectel Android RIL rar file
2022-09-15 13:00:35 74KB ril android
This book is intended to be a concise reference to the Python programming language. Although an experienced programmer will probably be able to learn Python from this book, it’s not intended to be an extended tutorial or a treatise on how to program. Rather, the goal is to present the core Python language, and the most essential parts of the Python library in a manner that’s accurate and concise.This book assumes that the reader has prior programming experience with Python or another language such as C or Java. In addition, a general familiarity with systems programming topics (for example, basic operating system concepts and network programming) may be useful in understanding certain parts of the library reference.
2022-09-01 16:48:05 5.15MB Python
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1、适合软件开发人员使用 2、硬件开发人员亦可参考 IMX6DQRM datasheet IMX6DQRM_寄存器手册 IMX6DQRM_寄存器手册(数据手册),共71章,适用于初学者进行学习,有关于使用的问题欢迎留言探讨
2022-08-30 16:00:51 26.59MB I.MX6
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高效视频编码(HEVC)是ITU-T视频编码专家组(ITU-T Q.6/SG 16)和ISO/IEC运动图像专家组(ISO/IEC JTC 1/SC 29/WG 11)目前的联合视频编码标准化项目。‎ HEVC标准的第一个版本于2013年4月最终确定。 ‎HEVC的第二个版本,包括‎‎RExt‎‎,‎‎SHVC‎‎和‎‎MV-HEVC‎‎扩展,于2014年10月完成。‎ ‎HEVC的第三个版本,包括‎‎3D-HEVC‎‎扩展,于2015年2月完成。 HEVC的第四个版本,包括SCC扩展,于2016年2月完成。‎ ‎HEVC的参考软件称为HM(‎‎H‎‎EVC Test ‎‎M‎‎odel)。‎ 压缩包内包含Windows x86 和 x64 的二进制版本。
2022-08-27 09:01:22 6.29MB HEVC H.265 Codec HM
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AI脚 本文档指南英文版.0..
2022-08-24 16:51:22 2.21MB 1111
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Need to learn statistics for your job? Want help passing a statistics course? Statistics in a Nutshell is a clear and concise introduction and reference for anyone new to the subject. Thoroughly revised and expanded, this edition helps you gain a solid understanding of statistics without the numbing complexity of many college texts. Each chapter presents easy-to-follow descriptions, along with graphics, formulas, solved examples, and hands-on exercises. If you want to perform common statistical analyses and learn a wide range of techniques without getting in over your head, this is your book. Learn basic concepts of measurement and probability theory, data management, and research design Discover basic statistical procedures, including correlation, the t-test, the chi-square and Fisher’s exact tests, and techniques for analyzing nonparametric data Learn advanced techniques based on the general linear model, including ANOVA, ANCOVA, multiple linear regression, and logistic regression Use and interpret statistics for business and quality improvement, medical and public health, and education and psychology Communicate with statistics and critique statistical information presented by others
2022-08-13 18:38:22 4.47MB Statistics  Data Science
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