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说明：  底层使用，你懂的,主要用于运行特定通讯程序的底层调用功能(You will kown how use it.)

SPI通信---pic18系列单片机编程实现使用MAX7219控制4位7段数码管显示数字：0 1 2 3。(SPI communication--- pic18 series microcontroller programming using the MAX7219 control four 7-segment LED display digits: 0123.)

AD2S1210驱动 DSP版本，内部有模拟SPI读写程序，实现普通模式读取角度(AD2S1210 Driver DSP Version)

无差拍PFC仿真代码，在PSIM下的电路仿真(Deadbeat PFC simulation code, circuit simulation in PSIM)

基于51单片机，12864液晶整屏滚动显示，动态显示(Based on 51 single-chip, full-screen scroll 12864 LCD display, dynamic display)

at91sam9269 recovery flash

基于rc531读写芯片的读写源程序，读取ID卡的ID号(rc531 typeB)

子带编码是一种以信号频谱为依据的波形编码方法，首先用一组带通滤波器将输入信号按频谱分开，然后让每路子信号通过各自的自适应PCM编码器（ADPCM）编码，经过分接和解码再复合成原始信号。(In sub-band coding is a waveform signal based on the spectrum coding method using a first set of band pass filters to separate an input signal spectrum, and so that each signal path through the respective adaptive PCM coder (ADPCM) encoding, after tap and then combined into the original decoding signal.)

使用IO口模拟I2C时序，包括主机、从机时序。(Using IO port simulation I2C timing, including the host, the machine timing.)

很好的RNDIS协议文档，从微软官方下载的(RNDIS Protocol Document)