this is the program for seven segment diasplay in P89c51 microcontroller

微机原理及接口技术课程设计交通灯程序，多段代码整理-theory and computer interface technology curriculum design traffic lights procedures and code of finishing

在电子技术中，频率是最基本的参数之一，又与许多电参量的测量方案、测量结果都有十分密切的关系，因此频率的测量就显得更为重要。测量频率的方法有多种,其中电子计数器测量频率具有精度高、使用方便、测量迅速，以及便于实现测量过程自动化等优点，是频率测量的重要手段之一。在本次毕业设计中我们选择使用单片机来制作数字频率计，并在实际制作中采用了直接测频法。利用延时产生的时基门控信号来控制闸门，通过在单位时间内计数器记录下的脉冲个数计算出输入信号的频率，最终送入LCD中显示。这样制作出来的频率计不仅可以满足设计题目的参数要求，而且具有了单片机的稳定性和成熟性，且控制能力强，是一种低成本，高可靠的设计方案。-In electronic technology, the frequency is one of the most basic parameters, but also with a number of electrical parameters of the measurement program, the measurement results have a very close relationship between the frequency of measurement, therefore it is even more important. Measurement of the frequency of a number of means, electronic measurement of the frequency counter with high precision, easy to use, rapid measurement, and measurement is easy to realize the advantages of process automation is an important means of measuring the frequency of one. Graduates in this design we have chosen to make use of single-chip digital frequency meter, and used in the actual production of a direct

: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.

触摸传感器焊接注意事项,OMRON的硬件设计方案。触摸按钮设计芯片的使用说明。-welding attention to the touch sensor, OMRON hardware design. Touch the button design chips for use.

基于专用运动控制芯片的开放式数控系统研究 -Special motion control chip based on Open CNC System

美国政府的联邦体系架构（FEA）的说明。美国政府规定所有联邦部门（federal级别)必须利用该架构描述与设计其电子政务系统。其中体现了从需求分析一直到系统技术实现的整体建模思想，提出了业务线、业务矩阵等电子政务系统分析和设计方法-the United States government of the Federal Architecture (FEA) of the note. The United States government requires all federal agencies (federal level) must be described using the structure and design of its e-government system. Reflecting the demand analysis system technology has been to achieve the overall modeling, a business line, operational matrix of e-government systems analysis and design methods

ti公司的达芬奇平台的user guide，是入门的文档。-ti da Vinci platform

基于流媒体的视频点播系统的设计与实现 硕士学位论文-Streaming media-based VOD System Design and Implementation of a master

电容式触摸ic1080实验板资料，由厂方提供。-Capacitive touch panels ic1080 experimental data, provided by the factory.

介绍USB分析仪器的商机，是一个非常好的项目。有兴趣可以做-USB devices on the business opportunities, is a very good project. Interested can do