PCI bus more learning materials, a total of seven documents, a comprehensive und...

opengl program draw forest

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

ABB变频器的资料，是ＡＣＳ８００的，非常实用，在工控调速领域都能用上．-ABB Inverter information ACS800 very practical in the field of industrial control speed can use.

并口的接口规范，对开发并口驱动的同行很有用。-Parallel Port Interface Specification, on the development of parallel drive counterparts useful.

电子时钟源程序设计，可以作为课程设计用，非常实用哦。-clock design

实验室做的SVC无功补偿项目，可以做为参考，谢谢大家了啊啊啊 啊。-Laboratory to do the project SVC reactive power compensation, can be used as reference, thank you for the ah ah ah.

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.

该论文以CAN总线的实时性问题为研究对象，在系统分析了CAN总线协议的特点并指出CAN总线的主要局限性的基础上，对CAN总线网络通信的实时性问题进行理论分析。 -CAN bus to the paper issues real-time study in the analysis of the characteristics of CAN bus protocol and pointed out that the main limitations of CAN bus based on CAN bus network communication theory in real-time analysis of issues .

图书馆管理系统源代码 Visual Basic6.0环境下采用“自上而下地总体规划，自下而上地应用开发”的策略开发本系统的详细过程-library management system source code in Visual Basic 6.0 environment "to the overall top-down planning, bottom-up application development" strategy of the system development process in detail

这是本人毕业设计翻译的一篇英文的Data Sheet。这个芯片是一个USB转UART的芯片，需要很少的外围器件。-This is my graduation project to an English translation of the Data Sheet. This chip is a USB to UART chip, a small peripheral device.