[DSP编程] Three-phase-smart-meter-design
充分地利用了DSP强大的信号处理能力和现代数值分析方法。 设计了电能表前端采样及计量模块的硬件，以及一套符合国标GB/T 17883-1999的 0.2S
级精度要求的算法，同时扩展了谐波分析功能。系统概述为：三相电压、电流
AD 采样，采样数据通过串口送至处理器(DSP)，由 DSP 对采样数据作电参数计
量和谐波分析，处理结果通过定制 LCD 显示，并通过脉冲口发出有功、无功校
表脉冲。DSP 采用 ADI 公司的 BLACKFIN531-16 位定点芯片，最高处理能力可
达 800MIPS， 采样芯片为 16bit 的AD73360， 支持六通道同步转换， 无同步误差。数字化、高精度、创新性和可扩展性是本项目的特点，准同步采样算法和谐波分
析是本项目的新颖之处。
Make full use of the DSP powerful signal processing ability and the modern numerical analysis method. Design the
Watt-hour meter front sampling and measuring module of hardware, as well as a set of accord with national standard GB/T 17883-17883 of 0.2 S
Accuracy of algorithm, at the same time extend the function of harmonic analysis. System overview: three-phase voltage and current
The AD sampling, sampling data via a serial port sent to the processor (DSP), electric parameter meter by DSP of the sampling data
Quantity and harmonic analysis, process the results with a custom LCD display, and through pulse mouth making active and reactive power
Table pulse. DSP adopts BLACKFIN531 of ADI company- a 16-bit fixed-point chip, the highest processing capacity
Up to 800 MIPS, sampling chip AD73360 for 16 bit, supports six channels synchronous conversion, no synchronization error.
Digital, high precision, innovative and extensibility ?
(2015-05-26, Windows_Unix, 665KB, 下载15次)
[汇编语言] dianti
模拟某校九层教学楼的电梯系统。该楼有一个自动电梯，能在每层停留。九个楼层由下至上依次称为地下一层、第一层、第二层、……第八层，其中第一层是大楼的进出层，即是电梯的“本垒层”，电梯“空闲”时，将来到该层候命。 乘客可随时地进出于任何层。对于每个人来说，他有一个能容忍的最长等待时间，一旦等候电梯时间过长，他将放弃。 模拟时钟从0开始，时间单位为0.1秒。人和电梯的各种动作均要消耗一定的时间单位（简记为t），比如：有人进出时，电梯每隔40t检测一次，若无人进出，则关门；关门和开门各需要20t；每个人进出电梯均需要25t；如果电梯在某层精致时间超过300t，则驶回1层候命。 (2008-06-03, Visual C++, 3KB, 下载15次)
http://www.pudn.com/Download/item/id/480864.html[单片机开发] meterage
采样高压电流，计量安培小时数通过无线定时传输，支持无线校时、密码设置等功能，可扩展成zigbee组网
Sampling high-voltage current measurement of the number of ampere-hours from time to time through wireless transmission, wireless school support, password settings and other functions, which can be expanded into a network zigbee (2007-10-26, Others, 19KB, 下载15次)
[matlab编程] MATLAB
< 精通MATLAB综合辅导与指南> 西安交通大学 李人厚 张平安 等译校 这是一本有关MATLAB的参考书，适合于使用MATLAB或正在打算使用MATLAB的读者。本书另辟蹊径可以借助或不借助MATLAB随带的文档资料让读者自学MATLAB。书中口语化的风格,使读者易于阅读。如书名所示,本书提供了读者精通MATLAB所需的工具。作为编程语言和可视化工具,MATLAB具有丰富的一系列功能,可解决工程、科学计算和数学学科中许多问题。本书的基本目的是通过向读者展示如何有效地使用这些功能来帮助读者增强工作能力。由于MATLAB交互式的性质,书中内容以举例方式来描述。在读者阅读本书的同时, 这些例子可以通过运行MATLAB而再现。 (2007-09-25, matlab, 1010KB, 下载15次)
http://www.pudn.com/Download/item/id/337831.html[网络] 2ntp-dev-4.2.0b-20051231
网络时间协议NTP
源码
版本v4.2.0b
该源码用于linux平台下，提供网络校时服务。
Network Time Protocol NTP source version v4.2.0b the source code for linux platform to provide network services to schools. (2007-08-27, Unix_Linux, 2768KB, 下载15次)
[Pascal/Delphi编程] xueshengsusheguanlixitong
校学生宿舍信息系统是针对学校人事处的大量业务处理工作而开发的管理软件，是典型的管理信息系统（Management Information System）。它是一个教育单位不可缺少的部分,它的内容对于学校的决策者和管理者来说都至关重要,它能够为用户提供充足的信息和快捷的查询手段。能有效的帮助学校和老师掌握学生的情况。
school student hostels Information System is launched at schools PMSS the considerable business processing and the development of management software, is a typical management information system (Management Information System). It is a unit of education as an indispensable part, the content of policy makers and school administrators are of great importance, it can to provide users with sufficient information and efficient means of inquiries. Effective with the help of school teachers and students. (2006-04-02, Delphi, 1102KB, 下载15次)
[*行业应用] Lazhi
工程斜井校直程序，希望大家喜欢
works inclined straightening procedures, hope you like (2004-12-13, Visual C++, 1KB, 下载14次)
[matlab编程] CLRC663-DataSheet-Chinese
CLRC663 是高度集成的收发器芯片，用于 13.56 兆赫兹的非接触式通讯。CLRC663 收发器芯片支
持下列操作模式
• 读写模式支持 ISO/IEC 14443A/MIFARE
• 读写模式支持 SO/IEC 14443IB
• JIS X 6319-4 读写模式支持（等效于FeliCa 1 方案，请参阅章节 21.5）
• 相应于 ISO/IEC 18092 的被动发起方模式
• 读写模式支持 ISO/IEC 15693
• 读写模式支持 ICODE EPC UID/EPC OTP
• 读写模式支持 ISO/IEC 18000-3 mode 3/ EPC Class-1 HF
CLRC663 能够透过内建发射器直接驱动外置天线与 ISO/IEC 14443A 或 MIFARE 卡片进行通信，而无
需附加有源电路。数字模块负责全部的 ISO/IEC 14443A 组帧和错误检测功能（奇偶校验和 CRC 循環
冗餘校驗）
The CLRC663 is a highly integrated transceiver IC for contactless communication at
13.56 MHz. This transceiver IC utilizes an outstanding modulation and demodulation
concept completely integrated for different kinds of contactless communication methods
and protocols at 13.56 MHz.
The CLRC663 transceiver ICs support the following operating modes
• read/write mode supporting ISO/IEC 14443A/MIFARE
• read/write mode supporting ISO/IEC 14443B
• read/write mode supporting JIS X 6319-4 (comparable with FeliCa 1 (see
Section 30.5) scheme)
• passive initiator mode according to ISO/IEC 18092
• read/write mode supporting ISO/IEC 15693
• read/write mode supporting ICODE EPC UID/ EPC OTP
• read/write mode supporting ISO/IEC 18000-3 Mode 3
The CLRC663’s internal transmitter is able to drive a reader/writer antenna designed to
communicate with ISO/IEC 14443A/MIFARE cards and transponders without additional
active circuitry. The receiver module (2016-08-18, C51, 3436KB, 下载14次)
[Java编程] zdsoft
一個學校的教学综合管理系统,包含了很多的功能。
schools teaching a comprehensive management system, includes many functions. (2007-06-29, Java, 425KB, 下载14次)
[教育系统应用] highschoolmanager
本系统面向学校管理员，即直接使用者。
本系统主要用于学校管理员管理学校教职工的基本信息，包括增加、修改、删除在校教职工的基本信息，设有浏览全体职工基本资料的功能，同时可以通过不同类查询具体职工的详细资料。还可以计算部分职工的工资。
the system for school administrators, that is, direct users. The system is mainly used for school administrators to manage staff of the basic information, including add, modify, delete the school staff in the basic information, all workers have the basic browser function information, while inquiries through various specific categories of workers detailed information. Also can calculate the wages of some workers. (2006-06-16, Visual C++, 693KB, 下载14次)
[通讯编程] MB-CRC-16
modbus通信协议校crc验码,通讯控制必备哦
Modbus communication protocol school CRC check code, communication and control must Oh (2013-04-19, LabView, 7KB, 下载14次)
[单片机开发] PPP
：实时、准确的提取道路信息和控制机器人的运动状态是机器人视觉导航系统的关键，
针对这两点提出了一套基于ARM 处理器的解决方案和控制算法，并着重研究了坐标几何校
正算法和最小曲率半径算法．实践结果表明，该套算法简便有效、实时性好、可靠性高，适用于
简易机器人的视觉导航．
Extracting road information real—time，accurately and controlling the motion of robot are two
key technologies of the mobile robot vision navigation system．This paper proposes a kind of sol utions
based on ARM and control algorithms for these two parts．And focus on the coordinate geometry correc—
tion algorithm and the minimum radius—of-curvature algorithm．The results show that the algorithm is
simple and effective，real—time and high reliability，so it applies to the simple visual navigation of the ro—
bot． (2012-12-12, PDF, 333KB, 下载14次)
[WEB开发] Exam_1.0
校无忧在线考试系统采用互联网技术,快速搭建在线考试系统平台,全面实现了考试工作的网络化、无纸化、自动化。系统操作简单,题型丰富,广泛用于企事业单位,学校教育培训机构等在线考试,网络考试,在线考核……
Secure online examination system USES the Internet technology, online examination system platform fleetly, fully realize the exam work of network, paperless, automation. System operation simple, topic is rich, widely used in enterprises and institutions, such as school education training institutions on-line exam, network testing, online examination...
(2011-04-18, ASP, 239KB, 下载14次)
[其他行业] 1535165cf
三相新规约生产程序2002.此软件价值2000元为辽宁省645规约三相校表软件232-485接口抄表，经测试下载即可使用。
2002 new Statute of the three-phase production process. This software is worth 2,000 yuan for the Statute of Liaoning Province, 645 interface, three-phase meter calibration software 232-485, the test can be used to download. (2011-03-26, Visual C++, 4318KB, 下载14次)
[网络编程] Computer_Networks_A_Systems_Approach
本书是计算机网络方面的经典畅销教科书，凝聚了两位顶尖网络专家几十年的理论研究、实践经验和大量第一手资料，自出版以来已经成为网络课程主流教材，被哈佛大学、斯坦福大学、卡内基一梅隆大学、康奈尔大学、普林斯顿大学、威斯康星大学、普度大学、得克萨斯大学、芝加哥大学等众多名校采用。
第4版秉承了前3版的特点，通过丰富的、基于实例的指导，来帮助读者理解计算机网络及其构件。全书的重点在于“为什么这样设计网络”——不仅详细叙述当今网络系统的组成，而且还阐述关键技术和协议如何在实际应用中发挥作用，从而解决具体的问题。
本书与传统网络教材最大的不同在于，不是按照OSI层次机械地介绍计算机网络，而是采用“系统方法”，将网络看成是交互式的复杂系统。每章开头都给出一些启发式的问题。引导学生或专业人员用新学到的知识来解决实际问题；同时，在每章的最后还会补充一些新的工具和资源，帮助读者巩固和加深所学知识，全面理解复杂网络及其应用的工作原理和工作方式。
When the first edition of this book was published in 1996, it was a novelty to be able to order merchandise on the Internet, and a company that advertised its domain name was considered cutting edge. Today, Internet commerce is a fact of life, and ".com" stocks have gone through an entire boom and bust cycle.A host of new technologies ranging from optical switches to wireless networks are now becoming mainstream. It seems the only predictable thing about the Internet is constant change. . . (2010-05-22, Others, 3195KB, 下载14次)
[网络编程] DD
手机远程监控 出行万里无忧
Mobile Remote Monitoring worry-free travel thousands of miles (2009-08-26, WORD, 32KB, 下载14次)
[matlab编程] Polynomial_Time_Primality_Testing(AKS)
Agarwal, Kayal and Saxena （AKS）質數判定法及Matlab代碼實現，學校作業可以參考。
Implements primes in p primality testing algorithm as proposed by Agarwal, Kayal and Saxena popularly known as the AKS algorithm. (2009-08-04, matlab, 1KB, 下载14次)
[汇编语言] JSQ
利用51实现计时器的完整汇编程序
主要硬件：
(1) MCU：AT89C2051或AT89C4051
(2) FM接收器：TDA7088或SC1088
(3) 数字电位器：X9315
(4) 运放：MAX4294
(4) LCD显示器：LCM06XK
----------------------------------------------------------
代码：
1.6KB
----------------------------------------------------------
主要性能：
(1)自动搜索电台，自动校准时钟
(2)自动识别报时信号特征，全球通用
(3)校时误差小于0.5毫秒
(4)手工调时
(5)电池低电量提示
(6)无电台提示
(7)音频监听接口
(8)节电控制
The use of the timer 51 to achieve a complete hardware assembler: (1) MCU: AT89C2051 or AT89C4051 (2) FM receiver: TDA7088 or SC1088 (3) Digital Potentiometers: X9315 (4) Op-Amp: MAX4294 (4) LCD display: LCM06XK ---------------------------------------------------------- code: 1.6KB ---------------------------------------------------------- performance: (1) automatic search radio stations, automatic calibration clock (2 ) automatically identify the characteristics of the time signals used all over the globe (3) the school when the error is less than 0.5 ms (4), when adjusted manually (5) low battery power tips (6) No radio tips (7) audio monitoring interface (8) power-saving control (2009-06-18, Asm, 5KB, 下载14次)
[Windows编程] stopcar
1）对所有入校车辆进行登记，包括车辆信息的修改，删除，添加，停车时间，出车时间的更新等。
2）对所有固定车主的信息进行登记，并且分类，将本校教职工和校外个人分开管理。
3）对非固定车辆进行停车登记，出车管理，以及计费。
4）对系统的管理员进行信息登记，包括系统信息的修改，删除和更新。
1) for all vehicles registered to the school, including changes to vehicle information, delete, add, stop time, trip time updates. 2) for all fixed-owners to register the information, and classification, our staff will be managed separately from and outside individuals. 3) non-stop registration of vehicles, vehicle management, and billing. 4) the administrator of the system to register information, including system information changes, delete and update. (2009-04-07, Visual Basic, 85KB, 下载14次)
[数学计算] Adams
用Adams三步四步法求解微分方程，程序主要是微分方程的Adams三步和四步外插法还有四阶预校算法的源程序。
Adams four with three-step solution of differential equations, differential equations are the main procedures of Adams and three-step outside the four-step interpolation method was also fourth-order pre-school algorithm source code. (2009-03-01, C/C++, 2KB, 下载14次)