一个电机接线图，但还不错，步进电机四

这是ES6461的直接驱动数字屏的,PCB和原理图ORCAD格式-this is the schematic(ORCAD) and pcb(Powerpcb) file ,ES6461 with digital panel file.

POS―MIS前台ER图设计范例，DOC文档。-POS-MIS prospects ER designs example, DOC files.

各种型号的红外遥控芯片的码型及其参数，有助于编写解码程序-Various types of infrared remote-control chip, code-type and its parameters, contribute to the preparation of decoding procedure

运放选型 运算放大器的结构形式主要有三种：模块、混合电路和单片集成电路。对于设计工程师来说，不仅是要知道所用产品的型号，而且还应熟悉生产这些产品的工艺，从而能够从一类放大器中选出一种放大器做特定的应用。-Selection of operational amplifier OPAMP structure There are three main types: modules, hybrid circuits and monolithic integrated circuit. Design Engineer for example, not only to know the product you are using models, but also familiar with the production process of these products in order to be able to elect one Class A amplifier amplifier make specific applications.

这个是 电脑装机系统设计的报告. 用于电脑城装机使用.客户服务器模式-installed the computer system design report. The city installed computers for use. Client-server model

mina的重要核心可自由下载此源码 -an important core mina free download this source

USB Monitor Control Class Specification

本“网上考试系统”是为了配合网上教学，实现网络学校一体化而设计的。设计本系统要熟悉掌握数据库的编辑和应用，并能与网络相结合。 本“网上考试系统”是基于微软的FrontPage和Access数据库来实现的。主要采用HTML语言来编写，设计过程中还应用到ASP语言。全文共分为系统分析、系统概述、设计过程、用户说明、 结束语、参考文献。本文详细阐述了系统分析、系统设计的方法及其内容，对如何使用ASP开发本系统作了较为详细的介绍。本系统以网页的方式对数据库进行调用，系统应用简单明了，考生可以轻松查看数据库，操作员也可以对数据库进行添加、删除、修改等操作。 关键词:网上考试系统，数据库，网页语言 -the "online examination system" is in line with the on-line teaching, the network integration of the school design. Design of the system to the mastery of the editing and database applications, and can combine with the network. The "online examination system" is based on Microsoft"s FrontPage and Access database to achieve. HTML language used mainly to prepare, the design process is also applied to the ASP language. There transcript analysis, the system outlined, design process, users that conclusion, references. The paper presents a systematic analysis, system design methods and their contents ASP on how to use the system was the development of a more detai

本文的电子密码锁利用数字逻辑电路，实现对门的电子控制，并且有各种附加电路保证电路能够安全工作，有极高的安全系数。 -In this paper, the electronic code lock using digital logic circuits, the realization of the electronic door control, and a variety of additional circuitry to ensure the safety circuit can work in very high safety factor.

this program is for using the switch in P89c51 embedded microcontroller kit