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The development of a data acquisition card based on USB bus is introduced in this article.It first describes the configuration and principle of this card in the part of hardware design,and then the application program and device driver in the part of software design.Data acquisition program in firmware is also discussed.Finally,this data acquisition card is tested and evaluated in a program developed by Lab Windows CVI,which shows that this car is stable and reliable

AC Controller you can use it as a good reference

How to build First-Generation Wireless USB Devices-First-Generation Wireless U.S. B Devices

很辛苦才画出来的一个开关电源原理图，protel 99 se上的。印刷出来能工作-How much could draw out a switching power supply schematic, protel 99 se on. Printing can work out

本文介绍了一种控制普通阀门的阀门控制器的设计方案，该阀门控制器带有工业现场总线PROFIBUS－DP 的接口，可以实现阀门的远程控制和网络控制。本文主要的着力点为介绍利用PROFIBUS－DP 专用芯片SPC3 开发PROFIBUS－DP 设备中需要注意的一些问题，包括硬件接口设计，有关PROFIBUS－DP 规范标准的一些设计要点，以及利用PROFIBUS－DP 诊断功能的方法。本文对设计其它Profibus DP从站节点有很好的参考价值!-This paper presents a general valve control valve controller design program The valve controller with industrial PROFIBUS-DP interface. The valve can be achieved remote control and network control. This paper mainly focus on the use of PROFIBUS-DP SPC3 ASIC development PROFIB U.S.-DP equipment necessary to pay attention to a number of issues, including the hardware interface design, The PROFIBUS-DP standards in a number of design features, and the use PROFIBUS-DP diagnostic function method. In this paper, the design of other Profibus DP slave nodes are of value!

太原理工大学硕士学位论文 分类号：TP3 密级：内部-Taiyuan University of Technology master"s degree thesis Key words : TP3 Confidential : Internal

通过MATLAB对过采样sigma-delta调制器进行仿真的设计方案，采用多级级联结构，有效减少运算量和硬件开销。-By MATLAB on the over-sampling sigma-delta modulator design simulation, using multi-stage cascade structure, effectively reduce the computational complexity and hardware overhead.

sunplus DVD 8202R datasheet -sunplus DVD 8202R datasheet

Trace Width Based on Voltage Drop

资产设备档案管理系统是一个企业单位不可缺少的部分，它的内容对于企业的决策者和管理者来说都至关重要，所以资产设备档案管理系统能够为用户提供充足的信息和快捷的查询手段。用Visual Basic构建的资产设备档案管理系统，数据库采用最先进的Oracle 9i，能实现资产类别的增加、删除、修改和档案的增加、插入、修改、删除、查询、预览、编辑、报表、刷新、移动、按某个属性显示等功能，此外，在程序中还设计了用户登陆，并设定了密码，以确保本系统应用的安全性。本管理系统设计合理、界面美观、操作方便、运行稳定、功能完备，为进行现代化的资产设备档案管理工作起到了重要作用，具有较高的实用价值。-err