介绍了管理信息系统的开发过程，从可行性分析、需求分析、概要设计、详细设计到实现、组装测试、确认测试。...

helicopter modle paper from nu

关于sine函数的生成 生成的sine函数是32X48的-sine function on the formation of generating sine function is the 32X48

通过CRM系统分析、本公司需求分析及考察CRM的一般系统与实际业务流程关系，确定本公司CRM系统设计定位于基于部门应用、运营与分析并重。并在此系统设计目标定位下，确定系统流程，设计功能模块，并努力面向部门协作与数据挖掘。-Through the CRM system analysis, needs analysis the Company and the inspection of the general system CRM business processes and the actual relationship between the CRM system to determine the design of the Company located in sector-based applications, both operations and analysis. And targeting this system under design, the system processes, the design of function modules, and the efforts for collaboration and data mining sectors.

本文件将帮助您了解思科如何进行行业界历史上最大的IP电话部署工程。-This paper will help you understand how Cisco industry to the largest in the history of the deployment of IP telephony works.

Here is a simple circuit for monitoring the fuel level in vehicles. It gives an audiovisual indication when the fuel level drops alarmingly below the reserve level, helping you to avoid running out of petrol on the way.

操作系统内存管理模拟，最优适应和最先适应算法-Simulation of the operating system memory management, optimal adaptation and the first adaptation algorithm

1.3寸蓝魔mp3原理图，对于开发2085的mp3硬件有很大帮助-1.3-inch blue magic mp3 schematics, 2085 for the development of hardware has a lot of mp3 help

Dopod 838官方拆机及维修手册,很详细的说明，照着他一步一步拆，很简单的，我的手机坏了就是照他拆了修的。-Dopod 838 official TBM Break-down and maintenance manual, a very detailed explanation, he told a step-by-step demolition very simple, I had a bad cell phone as he was taking off the surface.

认知无线电的开创者Mitolar的论文，是认知无线电领域的经典-Cognitive radio Mitolar the pioneers of the papers, is a classic field of cognitive radio

在数控机床中, 通常用可编程控制器( PLC) 对机床开关量信号进行控制。PLC可靠性高, 使用方便。但在大多数数控机床, 特别是经济型数控机床中, 要求的输入输出点数并不多, 通常在60点以下,因此, 为了降低数控机床成本, 在基于工业PC机的数控系统中, 可以采用开关量I/O板加外接继电器,配合主机的软件对机床开关进行控制。但如果PC机采用单任务操作系统(如DOS) , 数控系统的所有任务运行都置于一个总体的消息循环中, 软件的模块化和可维护性较差, 系统故障的风险相对集中, 而且不能充分利用PC机系统资源。而采用非实时多任务操作系统(如Windows) 时, Win32 API的设计没有考虑到实时环境的开发用途, 其系统调用的效率不高,不能满足数控系统PLC控制的实时性要求。 　　为此, 本文提出一种基于RT - Linux操作系统的嵌入式PLC, 利用RT - Linux的开放性、模块化和可扩展性的系统结构特性和多线程/多任务的系统环境,在保证实时性的同时, 使故障风险相对分散。 -use linux to design plc