基于8051单片机的数控电源设计方案

本文介绍了参数自适应模糊PID控制器在温度控制系统中的应用

某学校网络教育平台方案，可扩展综合性教育平台网络系统。-Online education platform in a school program, scalable platform for comprehensive sex education network system.

讲述以ALTERA公司的FPGA为核心，基干SOPC技术的嵌入式攒像机的设计-described in the company Altera FPGA as the core, SOPC skeleton embedded bloggers like Machine Design

对复杂混合气体/气味的定性识别是电子鼻技术应用的重要方面。文章以对不同品牌的葡萄酒样本的定性 识别为例,尝试利用气体传感器温度动态响应信息并结合Kohonen算法,实现对复杂混合气体/气味的定性识别。 -Complex hybrid gas/odor of the qualitative identification of electronic nose is an important aspect of technology applications. Articles on different brands of wine samples, qualitative identification as an example, try to use the dynamic response of gas sensor temperature information in combination with Kohonen algorithm, the realization of complex hybrid gas/odor qualitative identification.

1997年9月，NIST征集AES方案，以替代DES。 1999年8月，以下5个方案成为最终候选方案：MARS, RC6, Rijndael, Serpent, Twofish。 2000年10月，由比利时的Joan Daemen和Vincent Rijmen提出的算法最终胜出。（ Rijndael 读成Rain Doll。） http://www.esat.kuleuven.ac.be/~rijmen/rijndael/-September 1997, NIST AES assembly program to replace DES. In August 1999, the following five programs become final candidate : MARS, RC6, Rijndael, Serpent, Twofish. In October 2000, from Belgium J.J.K.Daemen3 Joan and Vincent Rijmen proposed algorithm eventually win. (Rijndael read Rain Doll.) Http://www.esat.kuleuven.ac.be/ ~ rijmen/rijndael /

连锁酒店VPN解决方案由于商务型、游客型的客人占大部分的酒店住房比例，这些客人多半有收发MAIL、实时通、Skype、数码相机传输、浏览网页等方面的需求，因此是否能提供优质的宽带上网服务，可以说是酒店市场决胜的关键之一 -Hotel Chain VPN solution as a result of business type, tourists accounted for the majority of guests type of hotel housing ratio, most of these guests have to send and receive MAIL, real-time Qualcomm, Skype, digital cameras transmission, visit the website needs of the community, so it can provide high-quality broadband Internet access services, it can be said that the hotel market, one of the keys to victory

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

关于一个小型超市信息系统数据库设计的Word文档，可以做为课程设计参考。-With regard to a small supermarket information system database design, Word documents, can be used as curriculum design.

本文在回顾RS-485标准的基础上从几个方面简要讨论了提高RS-485网络可靠性的一些措施.-In this paper, recall the standard RS-485 based on a number of ways to raise briefly discussed the RS-485 network reliability measures.

国内先进的电力网络地理信息系统解决方案。-domestic advanced electricity networks geographic information system solutions.