S3C2443电源管理

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.

某机械工程学院的毕业设计以及毕业论文 非常参考价值-a mechanical engineering graduate of the College of Design and very useful Thesis

低频信号发生器设计任务书 可供电子通信设计爱者练习制作-Low-frequency signal generator design book for the mission design of electronic communications are to practice making love

this the rar file useful for the student s-this is the rar file useful for the student s

this document is very important for vhdl code

dsp-builder学习资料。学习dspbuilder构建系统的方法，主要在matlab环境下，结合simulink做硬件系统。和在matlab环境下仿真。然后生成硬件电路-dsp-builder learning materials. Construction dspbuilder learning systems, primarily in the Matlab environment, combining Simulink do hardware systems. And in the Matlab environment simulation. Then generation hardware circuit!

国际洲际酒店 FIDELIO前台酒店系统信息培训教程-InterContinental Hotels International FIDELIO front hotel system information training course

转角线位移式全闭环位置伺服系统及误差分析-Corner line displacement closed loop position servo system and error analysis

自动化应用－－直流电动机和交流发电机控制系统设计，环境为MATLAB-automation applications-- DC motor and alternator control system design environment for MATLAB

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