Fastecdsa 内容 易于 百胜 用法 产生金钥 签名和验证 任意椭圆曲线算法 导入和导出密钥 编码签名 致谢 关于 这是用于执行快速椭圆曲线加密（特别是数字签名）的python软件包。 安全 没有随机数重用，没有秘密材料上的分支，并且在对它们进行任何操作之前，所有点均已验证。 通过蒙哥马利点乘法可以缓解计时方面的挑战。 随机数是根据RFC6979生成的。 整个软件包中使用的默认曲线是P256，可提供128位安全性。 如果需要更高级别的安全性，则可以在一种方法中指定curve参数，以在更大的字段（例如P384）上使用曲线。 话虽如此，加密是棘手的，而且我不会犯错误。 请使用针对安全性至关重要的应用程序而已建立并经过审查的库。 如果您发现此库有任何安全问题或风险，请打开一个问题或给我发送电子邮件。 支持的Python版本 该软件包的初始版本针对python2.7。 较早的版本可能

LabVIEW_Digital_Signal_Processing_and_Digital Communications_by_Cory_L.Clark

Speech Enhancement Techniques for Digital Hearing Aids

数字图像的matlab实现第三版 Digital Image Processing Using MATLAB 3rd edtion 冈萨雷斯，这个版本配套冈萨雷斯的数字图像处理第四版教材，新增了不少算法，包括图像配准，图像分割，深度学习，卷积神经网络等

介绍数字锁相环的基本结构,详细分析基于FPGA的数字锁相环的鉴相器、环路滤波器、压控振荡器各部分的实现方法,并给出整个数字锁相环的实现原理图。仿真结果表明,分析合理,设计正确。

单相锁相环simulink仿真，用于并网逆变等，大部分不是自带模型，根据相关资料和离散方程搭建，比较实用。基于matlab2014b

his ninth edition of Digital Electronics: A Practical Approach with VHDLprovides the fundamentals of digital circuitry to students in engineering and technology curric- ula. The digital circuits are introduced using fixed-function 7400 ICs and evolve into FPGA (Field Programmable Gate Arrays) programmed with VHDL (VHSIC Hardware Description Language). (Note:Those schools not wishing to develop logic using VHDL and FPGAs can completely skip those sections of the textbook without affect- ing the continuity of the remainder of the text, which describes logic design and imple- mentationusing 7400-series ICs.) Coverage begins with the basic logic gates used to perform arithmetic operations and proceeds through sequential logic and memory circuits used to interface to mod- ern PCs. Professor Kleitz uses his vast experience of teaching electronics online and in class from his best-selling textbooks to know what it takes for an entry-level student to be brought up to speed in this emerging field. It was important to design this new text- book to present practical examples, be easy to read, and provide all of the information necessary for motivated students to teach themselves this new subject matter. This makes it ideal for learning in an online environment as well as from conventional in- class lectures. Digital electronic ICs (integrated circuits) and FPGAs are the “brains” behind common microprocessor-based systems such as those found in automobiles, personal computers, and automated factory control systems. The most exciting recent develop- ment in this field is that students now have the choice to design, simulate, and imple- ment their circuits using a programming language called VHDL instead of wiring individual gates and devices to achieve the required function. Each topic area in this text consistently follows a very specific sequence of steps, making the transition from problem definition, to practical example, to logic IC imple- mentation, to VHDL and FPGA implementation. To accomplish this, the text first in- troduces the theory of operation of the digital logic and then implements the design in integrated circuit form (see Figure P–1). Once the fixed-function IC logic is thoroughly explained, the next step is to implement the design as a graphic design file and then to implement it using the VHDL hardware descriptive language, all within the free version of the Altera Quartus®II development software. Several examples are used to bolster the student’s understanding of the subject before moving on to system-level design and troubleshooting applications of the logic. This step-by-step method has proven over the years to be the most effective method to build the fundamental understanding of digital electronics before proceeding to implement the logic design in VHDL. The Altera Quartus®II software is a free download that allows students to either graphically design their circuit by drawing the logic (using logic gates or 7400 macro- functions) or use VHDL to define their logic. The design can then be simulated on a PC before using the same software to download the logic to an FPGA on one of the commercially available FPGA programmer boards, such as the Altera DE2 illustrated in this text.

网盘文件永久链接 1、城市运行指挥中心（城市IOC）解决方案介绍 2、一网统管解决方案介绍 3、一网通办解决方案介绍 4、智慧城市场景化解决方案介绍 5、智能网联解决方案介绍 6、应急指挥解决方案介绍 7、智慧水利水务解决方案介绍.......

非常难得的资源，网上很难下得到了，在此分享给大家，希望对大家学习通信原理有帮助。非常专业的指导书，感觉比Prokis的那本写的要好！

HYRes IV(发音[haires aivi:])是一款软件工具，设计用于使用符合ISO 12233的分辨率图表精确测量数码相机的分辨率。 HYRes软件支持ISO 12233和CIPA标准DC-003“数码相机分辨率测量方法”(见http://www.cipa.jp/std/std-sec_e.html)中描述的测量方法。两个版本的HYRes 3.1(2004)和HYRes ACE(2006)已经由CIPA发布。 HYRes IV是HYRes 3.1和HYRes ACE这两个软件功能的集成，已经更新到最新的操作系统。IV是综合版本的缩写。