pwm

用户分为普通用户和管理员 普通用户只有订餐、发送订单、修改个人信息的权利 管理员拥有普通用户的所有权利 以及增删改查的权利、对货物的增删改查 对订单的查看、删除、处理等、以及对用户的管理 (Users are divided into ordinary users and administrators ordinary users only ordering, send orders, the right to modify personal information Administrators have all the rights of the ordinary users as well as the right to CRUD the CRUD check goods orders view, delete, processing etc., as well as the management of the user' s)

说明：  very important part in vlsi fabrication. Lithography process

PLC control program, automatic cutting production line for aluminium profile

医学信息学是一个新兴的领域，医疗信息系统是医学信息学的一个重要分支。虽然也不乏很多在临床上已经应用的系统，但由于缺乏一个理论的指导，发展呈无序状态。各开发商在进行医疗信息系统建设时往往直接套用其它领域的信息系统开发理论，以满足医疗机构的暂时需求为主要目的，造成开发出来的产品各自为政，重复开发，而且彼此之间很难互连。我国在医疗信息系统领域的起步较晚，最近几年才开始进行系统的研究和开发。 建立并完善医疗信息系统的理论体系是目前医疗信息系统领域十分迫切的要求。本论文以建立整套理论体系为长远目标，以分布式异构系统集成为主要问题对象，从理论和实践两个方面对医疗信息系统的体系结构进行了深入的研究；构建了针对系统集成的医疗信息系统体系结构；设计并实现了医疗信息系统的开发平台。具体来说，本文主要包含以下内容： 从医学信息和医疗信息系统两个方面对医疗信息系统理论体系所涵盖的内容进行了分类总结和综述，为从事医疗信息系统研究、开发、维护、使用的工作人员提供了一个理论基础。 在分析了目前流行的信息系统体系结构的基础上，基于中间件理论提出了医疗信息系统体系结构的设计，从技术平台和医疗模型两个层...(Medical Informatics is a rising field of research with Medical Information System as one of its important branches. Although many information systems have been applied in clinical practice, since they are in lack of theoretical guidance, the development has been a disorderly one. The developers mechanically copy the development of information system from other fields to temporarily meet the demand in healthcare institutes, hence the products ever developed are either irrelative or repetitive and can not be )

WPC协议规定的无线充电的基本原理与设计规范，是对无线电力传输爱好者的必备资料(WPC agreement provides for the basic principles of wireless charging and design specifications, is essential for wireless power transmission enthusiasts information)

本文实现了光缆监测站自动监测终端设备的设计方案，通过嵌入式硬件系统和软件的协同工作，该监测设备能够对通信光缆进行在线实时监测，并且能够实时探测到通信光缆的故障点，方便了通信光缆的维护工作。该系统在业务板卡的设计，以及CAN控制通信总线的使用都增强了设备的兼容性和系统的可扩展性，并且增加了环境监测单元来自动调节环境温度，以保证系统安全可靠运行。(This automatic monitoring stations to achieve a fiber optic terminal equipment design, through the embedded hardware systems and software work together, the monitoring device can communicate on-line real-time monitoring of fiber optic cable and communication cable in real time to detect the point of failure, to facilitate the communication cable maintenance. The system is in the business card design, and the use of CAN bus control communication devices have enhanced compatibility and system scalability, and increased environmental monitoring unit to automatically adjust the temperature to ensure the system safe and reliable operation.)

manual for driver for some inverters for cold cathode lamp

约束所有时钟（包括你的设计中特有的时钟）对准确的时序分析结果而言是必不可少的。Quartus II TimeQuest Timing Analyzer为各种各样的时钟配置和典型时钟提供许多SDC命令。(Constraining all clocks, including the clocks unique to your design, is essential for accurate timing analysis results. The Quartus II TimeQuest Timing Analyzer provides many SDC commands for a variety of clock configurations and typical clocks.)

这是关于现代电力系统优化模型及其相关算法研究的优秀博士论文，希望能对大家有用(This is on the modern power system optimization model and its associated algorithm for outstanding doctoral dissertation, hoping to be useful for all of us)

有关主动路由协议的文档介绍以及具体的一个应用设计方案(Document describes the active routing protocol, as well as an application design)