编码器工作原理绝对脉冲编码器:APC 增量脉冲编码器:SPC

c51连接pci rt8139网卡的电路原理图。-pci rt8139 decoder card connected to the circuit diagram.

低通切比雪夫I型数字滤波器阶数为7阶 在2000Hz通带表现截止在2500Hz阻带边界在过渡带和阻带之间是单调下降波形. -Low-pass Chebyshev Type I digital filter order is 7  in the 2000Hz band pass-band cut-off at 2500Hz stopband performance in the transition zone and the boundary between the monotonic decline in stopband wave.

该源码演示了如何计算字串的CRC32及文件的CRC32，通讯上极常用的算法。- How did this source code demonstrate has calculated the character string CRC32 and document CRC32, in the communication the extremely commonly used algorithm.

完整的文件发送接收程序源代码VB.zip 下载的别人的，谢谢原作者。-integrity of the document send and receive source code VB.zip download others, I thank the original author.

基于WiMAX IEEE 802.16e物理层规范的Simulink模型参考。-Based on the WiMAX IEEE 802.16e physical layer specification of the Simulink model reference.

Modbus Protocol specs

具有类似ＱＱ程序的功能，是学习ＶＢ网络编程的好例子，界面漂亮-similar procedures QQ functions, is learning network programming in VB good example of beautiful interface

屏幕监视，简单写的。-screen monitor, simple writing.

用S7-200PLC的自由口模式和VB中的MSComm控件方便地实现了计算机与S7-200（CPU224）PLC的通讯。计算机作为主站,用户通过计算机可以方便地设置房间的控制指令并向PLC发出控制或监测命令， PLC作为从站来响应计算机发送的指令并采取相应的动作并将房间的电、水、热信息发回到计算机。用户可以通过电脑屏幕实时地监视到房间的电、水、热信息并进行相应的处理。-with S7-200PLC the Free Port Mode and the VB MSComm to realize a trap Computer and S7-200 (CPU224) PLC communications. Computer as a master station, Computer users can easily set up control rooms PLC issued directives to control or monitoring orders, PLC as from the station to respond to orders sent by the computer and take corresponding action will be room for electricity, water, Heat fat information to the computer. The user can screen real-time surveillance of the room electricity, water and heat information and handled accordingly.

基于串口收发的无线接收应用软件，供参考学习-Serial Transceivers Based on the reception of wireless application software for information learning