设计一个语音解说系统，并且带有源代码和原理图及pcb图-Design a voice guide system, and with the source code and schematic and pcb diagram

介绍powerdesigner工具的使用-Powerdesigner introduce the use of instrument

详细介绍了城市动态交通系统的技术路线与开放方案，是进行DTA系统开发的必备参考-Described in detail the dynamic urban transport system technology roadmap and open the program, DTA is an essential system development

BBC 将P2P 引入电视技术-BBC television will introduce P2P technology

硕士学位论文 基于浏览器/服务器架构的视频点播系统的设计与实现-Master

基于数字电位器AD8402的程控增益系统。　比较了程控增益放大器的各种不同构成方式,介绍了一种采用多路数字电位器AD8402的偏置可调程控增益系统,同时给 出了该系统的硬件原理和软件设计,并指出AD8402使用中的几个注意事项。该设计方案硬件结构简单,性价比高,具有一定的通用性。-Digital Potentiometers AD8402 based on the programmable gain system. Programmable Gain Amplifier comparing the different poses to introduce a multi-way Digital Potentiometers AD8402 programmable gain adjustable bias system given the system

关于PCI桥芯片的设计，共9篇文档，全面介绍了各种系统中桥芯片的使用-With regard to PCI bridge chip design, a total of nine documents, a comprehensive introduction to a variety of systems in the use of bridge chips

SM5004,完全可以取代mcx314的一款FPAG芯片！-SM5004, is entirely possible to replace a MCX314 of FPAG chips!

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

采用DM642DSP实现基于H_264的数字视频监控系统-DM642DSP realize H_264 based on the use of Digital Video Surveillance System