nRF24L01-Quick-Dev
2.4GHz nRF24L01开发系统使用手册
为了便于用户开发应用先进的2.4GHz nRF24L01高速2Mbps无线芯片开发，迅通科技提供nRF24L01快速开发系统，nRF24L01开发系统包括两个无线高速多频道模块、两个开发板(含可更换MCU及用户开发空间)，详细源代码，原理图，资料光盘，开发板上有MCU、串口、按键和指示灯等，加电即可使用，可完成无线双向数据高速传输的全部功能，并可方便地进行性能以及距离评测，并迅速掌握nRF24L01的多频以及高速无线通信编程和协议的设计。
时间：缩短你的开发时间，建立你对2.4GHz RF产品开发的信心
风险：接近实用的评估板，方便验证和改进，零风险
费用：只需不到一个工程师一个月的薪水或你预算内很小一部分
市场：可对多种产品及应用进行验证，实现平台的验证与应用
资料：技术资料全，上手快，可以使你立刻进入与世界同步的2.4GHz无线设计领域
NRF24L01-Quick-Dev
2.4GHz nRF24L01 development system manual.
In order to facilitate the users to develop the application of advanced 2.4GHz nRF24L01 2Mbps high speed wireless chip development, electric technology to provide nRF24L01 rapid development system, the development of nRF24L01 system includes two wireless high speed multi channel module, two development board (including replaceable MCU and user space ), detailed source code, schematics, data discs, the development board MCU, serial, buttons and lights, power can be used, can complete the two-way wireless high-speed data transmission of all functions, and can be conveniently carried out performance as well as the distance measure, and quickly grasp nRF24L01 multiple frequency and high speed wireless communication programming and protocol design.
Time: reduce your development time, build your confidence on 2.4GHz RF product development
Risk: close to the practical evaluation board, convenient for validation and impr (2012-09-17, C++ Builder, 422KB, 下载14次)
本文给出了一种利用幅相加权对阵列天线进行全局优化的方法。为了使天线的辐射波束形成给定的
方向图，采用联合应用DFP和BFGS公式的变度量算法对阵列天线各单元的馈电幅度和相位分布进行优化，
通过C++语言编程计算实现，从而使得优化后的阵列天线主波束形状能够与预给波束形状相吻合，达到设计
要求。全局优化是本文的特色，它弥补了局部优化结果的精确度依赖于初始值的缺点，因而得以保证通过优
化得到的天线主波束与给定波束的主瓣相吻合，副瓣也得到有效控制。该方法具有快速收敛，计算量小等优
点，是一种解决阵列天线波束赋形问题的有效方法。
In this paper, the amplitude and phase weighted array antennas for global optimization method. Order to make the antenna radiation beam to form a given pattern, using the combination of DFP and BFGS formula variable metric algorithm to optimize the amplitude and phase distribution of each cell of the array antenna feed, calculated through C++ language programming to achieve, which makes optimization array antenna main beam shape is consistent with the pre-to the beam shape to meet the design requirements. Global optimization is a feature of this article, it makes up for the shortcomings of the accuracy of the local optimization results depend on the initial value, and thus can be guaranteed through the optimization of the antenna main beam to coincide with the main lobe of a given beam, sidelobes also been effectively controlled . The method has fast convergence of computing and small volume, is a solution to the array antenna beamforming. (2012-06-07, C++, 1026KB, 下载71次)
首先介绍缓冲区溢出机制和基于缓冲区溢出的攻击形式,从C程序员的角度讨论了三类常用的库函数在调用时可能引发的安全问题,并详细分析了缓冲区溢出的内在原因及可能被利用的攻击方法。如果在编程时能针对这些库函数的调用有意识地采取应对措施,无疑将减少缓冲区溢出漏洞,提高程序的安全性能。
Firstly the paper introduces buffer overflow and the potential attack based on it, then from the view of a C programmer, to discusse program security when three kinds of common used lib functions were called, finally it try to analysis the inner mechanism that cause buffer overflow. It would be helpful to minimize buffer overflow and improve the security of the program if we take actions consciously when calling these lib functions. (2012-02-21, C/C++, 164KB, 下载3次)
S7-200 PLC之PPI协议
通过硬件和软件侦听的方法，分析PLC内部固有的PPI通讯协议，然后上位机采用VB编程，遵循PPI通讯协议，读写PLC数据，实现人机操作任务。这种通讯方法，与一般的自由通讯协议相比，省略了PLC的通讯程序编写，只需编写上位机的通讯程序资源
S7-200 PLC via PPI protocol of the hardware and software methods of listening, analyzing the internal PLC inherent PPI protocol, then the host computer using VB programming, follow the PPI protocol, read and write PLC data to achieve man-machine task. This communication method, and the general freedom of communication protocols, communication is omitted PLC programming, just the preparation of PC communication program resources (2011-09-14, Visual Basic, 15KB, 下载79次)
以太网数据帧的监听与分析当以太网上的两台主机需要通信时，发送方将数据单元DU传送给它下层的服务提供者。DU 在不同层之间传递时，各层按照协议规范对DU 进行封装，到数据链路层时被封装成MAC帧，即数据链路层的协议数据单元。在MAC帧中包含了数据链路层及其以上各层的协议首部及DU，通过帧发送原语从网络上发送出去，对方的协议处理软件接收到MAC帧后，可解释提取其中的DU。本题目要求编程实现MAC帧的捕获及分析。要求能够实时捕获所在以太网内正在传输的数据帧，并能分析帧的结构，给出每一个帧中发送端和接收端的MAC地址，以及承载数据的协议类型
Ethernet monitoring and analysis of data frame (2011-06-15, Visual C++, 13KB, 下载12次)
本书从编程实践角度详细介绍了PC计算机Windows环境下、DOS环境下以及单片机的串口通信的基本方法，并根据当前串口与网络结合的发展趋势，给出了串口与TCP／IP网络、远程监控相结合的解决方案与详细程序实例。内容丰富、步骤详尽，初学Visual C++／Turbo C的读者也能很快编写出实用的串口通信程序。
Programming practices from the perspective of the book details the PC computer under Windows environment, DOS environment, and the basic microcontroller serial communication method, and serial and network integration based on the current development trend, given the serial and TCP/IP network, remote monitoring combination of solutions and detailed procedures for instance. Rich content, detailed steps, beginner Visual C++/Turbo C readers can quickly write serial communication and practical procedures. (2011-06-11, Visual C++, 18109KB, 下载15次)
Reed- So lomon (RS) 码是一种重要的纠错码, 它对随机性和突发性错误有极强的纠错能力, 广泛应用于
数字视频广播(DVB) 系统和其它数字通信领域。给出了一种GF (25) 域上的RS (31, 23) 编码器的实现算法, 介绍
了用现场可编程门阵列(FPGA ) 实现RS 编码器的原理和过程, 并给出了实现电路及其仿真的输出波形。
Reed-So lomon (RS) code is an important error-correcting code, its random and unexpected error has a strong error correction capabilities, widely used in digital video broadcasting (DVB) systems and other digital communications. Gives a GF (25) Domains RS (31, 23) algorithm of the encoder is introduced with a Field Programmable Gate Array (FPGA) RS encoder to achieve the principles and processes, and providing a circuit and simulation of the output waveform. (2010-06-09, VHDL, 352KB, 下载83次)
基于Simulink的DPSK的通信系统仿真
Simulink 是MATLAB提供的实现动态系统建模和仿真的一个软件包，它让用户把精力从编程转向模型的构造，为用户省去了许多重复的代码编写工作；Simulink 的每个模块对用户而言都是透明的，用户只须知道模块的输入、输出以及模块的功能，而不必管模块内部是怎么实现的，于是留给用户的事情就是如何利用这些模块来建立模型以完成自己的仿真任务；至于Simulink 的各个模块在运行时是如何执行，时间是如何采样，事件是如何驱动等细节性问题，用户可以不去关心，正是由于Simulink 具有这些特点，所以它被广泛的应用在通信仿真中，利用Simulink 强大的工具箱和其建模的优势建立了常用的DPCM数字电话通信系统仿真模型，对该通信系统进行了模型构建、系统设计、仿真演示、结果显示以及综合性能分析，而且该分析方法同样可推广到其它的通信系统，具有普遍意义。
Simulink-based simulation of Simulink DPSK communication system is provided by MATLAB dynamic system modeling and simulation of a software package that allows users to shift attention from the programming model of the structure, the user save a lot of repetitive coding work Simulink Each module is transparent to the user, the user need only know the module s input, output and functional modules, rather than how the realization of the internal control module, and then left to the user to do is how to use these modules to build model to fulfill its a simulation tasks as Simulink s Ge Ge module at run time how Zhi Xing, Shi Jian yes how to sample, events are the details of how to drive and so on Xing problem, users can not care, Zheng Shi as Simulink those characteristics, so Ta is widely used in communication simulation, using Simulink toolbox and its powerful modeling advantage of the establishment of a common DPCM Digital telephone communication system simulation model, the communica (2010-04-24, matlab, 7KB, 下载160次)
[CPUID.rar] - 获取CPU信息/ID号
[CPUID123.rar] - 编程高手 讨论
[GetNo.rar] - 获取硬盘序列号。可以利用在软件保护等模块中。自由下载无需帐号。
[测试CPU的程序.zip] - 测试CPU程序，可以读取CPU的各种比较详细的信息。
[GetCPUInfo.zip] - 用VC获取CPU的厂家信息，主频，ID。
[SDcardPROTLPCB.rar] - SD卡的PROTEL PCB封装，适合于作电路板用
[CPU信息查询演示.rar] - CPU信息查询演示.如何获取CPU名称，标识、制造商名称、主频、个数等。
[windowsCPUid.rar] - 获取CPU ID,可判断CPU型号和支持的指令集
[CPUinfo一.zip] - 获取CPU信息。
[Get_ID.rar] - 得到电脑的硬盘序列号与CPU的识别号，可以用来绑定电脑
sdgsadg (2010-02-27, tcl/tk, 1KB, 下载206次)
PMAC是可编程多轴控制器(Programmable Multi-Axis Controller)的简称，是美国Delta Tau公司生产的功能强大的运动控制器，PMAC是目前世界上功能最强的运动控制器之一，是当前开放式数控系统控制器的突出代表。该文档是PMAC使用中文手册。
PMAC is a programmable multi-axis controller (Programmable Multi-Axis Controller) the short title of United States Delta Tau is produced by a powerful motion controller, PMAC is the world s most powerful motion controller is one of the current Open CNC system controller on behalf of the prominent. The document is the use of Chinese manual PMAC. (2008-03-01, C/C++, 5399KB, 下载198次)
高性能600MHz的TMS320DM642是可编程的数字多媒体处理器，为了了解其对于多媒体数据通信的支持，本文针对DSP芯片上的网络开发工具NDK进行了研究，测试了其在UDP传输过程中的CPU效率，对其在不同传输速率和二级缓存大小的条件下的表现给出了比较。说明了DM642是一款很适用于多媒体通信的数字信号处理器
The TMS320DM642 is a 600MHz high-performance programmable digital multimedia processor, in order to understand their data communication for multi-media support, this article on a chip for DSP development tools NDK Network conducted a study to test its presence in the UDP transmission efficiency of the CPU its at different transmission rates and secondary cache size is given under the conditions of performance are compared. Describes the DM642 is a very applicable to multimedia communications, digital signal processor (2008-01-24, Visual C++, 63KB, 下载91次)
《橡皮条画线》C语言
（可供C语言图形编程参考）
本程序模拟许多绘图工具中的画线方法和画框方法
其中工具条上的各个按钮的功能是：
1、画线（快捷键“l”）
2、画框（快捷键“f”）
3、剪去框外的直线（快捷键“c”）
4、刷新（快捷键“r”）
5、新建（快捷键“n”）
6、退出（快捷键“Esc”）
最左边的十字架用鼠标拖动时可以移动工具条
左上角的
framepoints为所画矩形框的左上角坐标和右下角坐标
mouse为鼠标当前坐标
linesnum为队列中的直线数
"rubber line drawing of the" C language (C language for graphics programming reference), the simulation of many of graphics tools line drawing methods and ways in which frames the various toolbar button function is : a painting line (shortcuts "l") 2, frames (shortcuts "f"), outside the box cut line (shortcuts "c"), 4 refresh (shortcuts "r") 5, the new (shortcuts "n") 6. Denunciation (shortcuts "Esc"), the most crosses with the left mouse drive mobile tools can be in the upper left corner of the Fram epoints for painting rectangular box in the upper left and lower right coordinates of the mouse coordinates of the mouse coordinates of the current lin esnum queue for the few straight (2006-06-23, C/C++, 46KB, 下载9次)
PCI驱动编程实例，通过PCI可实施操作：
2、通过DMA方式往SDRAM写数据的步骤：
(1) 往OMB1写传输数据次数
(2) 往OMB2写所要访问的SDRAM地址
(3) 往FIFO写2
3、通过DMA方式从SDRAM读数据的步骤：
(1) 往OMB1写传输数据次数
(2) 往OMB2写所要访问的SDRAM地址
(3) 往FIFO写3
PCI-driven programming examples, can be implemented through the PCI operation : 2, DMA SDRAM write data to the steps : (a) to transfer data OMB1 write the number (2) to OMB2 was to be visited SDRAM Address (3) to FIFO write 2 3 through DMA side SDRAM-time data from the steps : (a) to transfer data OMB1 write the number (2) to OMB2 was to be visited SDRAM Address (3) to write FIFO 3 (2006-03-23, Visual C++, 61KB, 下载485次)
.Ne 环境的下多线程的TCP/UDP 编程示例子,里面包括了服务器也客户端程序
. Ne environment under the multi-threaded TCP/UDP programming examples son, which includes the server client program (2005-11-21, C#, 3KB, 下载247次)
介绍计算机上实现gsm modem短消息收发的模式，描述gsm modem PDU 模式，包括PDU 模式下的gsm modem模块UCS2 编码、解码原理，以及gsm modem发送与接收PDU 串的编制方式， VB 中的MSCOMM 控件，实现gsm modem短消息收发的核心内容。
briefed on computer modem gsm SMS transceiver model, described GSM modem PDU models, including the PDU mode GSM modem module UCS2 encoding, decoding principle, and GSM modems send and receive PDU Series presentation, the VB MSCOMM Control and achieve short GSM modem news transceiver core content. (2005-11-10, Windows_Unix, 88KB, 下载623次)