电信VOIP计费系统方案,在全国各地应用.

Windows的资源管理器想必大家都用过，该程序的窗口一分为二，左边的窗口显示本机当前所有驱动器以及驱动器中的所有文件夹，当用户单击文件夹后，如果该文件夹下面还有子文件夹，则上层文件夹展开显示下级的文件夹；否则，右边的窗口显示选择文件夹下的文件。该文档提供了实现方法。-Windows resource manager must have all used, the procedure is divided into two one window. The left window shows the current machine and all Drivers Drivers of all folders when users click the folder, If the folder Read Documents folder, the folder launched upper and lower levels show the folder; Otherwise, the right to choose a window shows folder of documents. The document provides a method.

本文介绍一种以CPLD[1]为核心、以VHDL[2]为开发工具的时间控制器，该控制器不仅具有时间功能，而且具有定时器功能，能在00：00～23：59之间任意设定开启时间和关闭时间，其设置方便、灵活，广泛应用于路灯、广告灯箱、霓虹灯等处的定时控制。-This article describes a CPLD [1] as the core, VHDL [2] for the development of tools for time controller that features not only has the time, but with the timer function, can be between 00:00 ~ 23:59 arbitrarily set to open time and closing time, and its convenient, flexible, widely used in street lamps, advertising light boxes, neon lights, etc. The timing control.

USB 芯片的电路及PCB 设计的重要注意事项,对USB可靠性设计有很大帮助.-USB chip circuit and PCB design Important Note on USB reliability design has been inspired by them.

详细讲述嵌入式系统构建的全过程，使用u－boot作为bootloader，2.6版本的linux作为系统内核，详细而深入，强-detail Embedded System Construction of the entire process, Use u-boot as Bootloader, the 2.6 version of Linux as the kernel. detailed and in-depth, strong!

:数字水印技术在数字产品的版权保护中起着非常重要的作用。概括了数字水印技术的现状及其基本原理,并 分析了变换域数字水印算法的优势,详细阐述了DCT 水印嵌入和提取算法的原理和步骤。最后在Matlab 平台下对DCT 数 字水印算法进行了仿真,仿真结果证实了DCT 算法的强健性和鲁棒性。-: digital watermarking technology in the digital copyright protection products played a very important role. Summarized the digital watermarking technology and the status of the basic principles and transform domain analysis of digital watermarking algorithm advantages, elaborate on the DCT watermark embedding and extraction algorithm theory and steps. Finally in Matlab platform for DCT digital watermarking algorithm for the simulation, Simulation results confirmed the DCT are strong and robust.

this the program for seven segment diasplay in P89c51 microcontroller-this is the program for seven segment diasplay in P89c51 microcontroller

内部管理系统详细设计方案.rar-detailed internal management system design. Rar

高速电路越来越普及，EMC和EMI的问题也受到重视．-High-speed circuits is becoming increasingly popular, EMC and EMI problems be taken seriously.

本文给出了一种避免网站危机的方法,即从软件工程的角度分析了电子商务网站建设过程中的常见问题,提出利用软件工程原理来规划整个电子商务网站。-In this paper, a Web site to avoid crisis, that is, from the perspective of software engineering analysis of the construction process of e-commerce website frequently asked questions, the use of software engineering principles to plan the entire e-commerce sites.

本文介绍了一种新型开关磁阻电机概念，分析，仿真验证，-This paper presents a novel switched reluctance motor concept, analysis, simulation verification,