labivew8.5编写的模拟信号采集的几个小程序，适合初学者-labivew8.5 analog data acquisition, prepared several small programs, suitable for beginners

This VI tells you the time delay between two analog input signal. For example, if you have two microphone with three meter space between them, and you make a clap, then the VI calculate the time delay with crosscorrelation and with maximum value serc

需要硬件支持才能当实际意义上的示波器用，但是模拟示波器的有matlab、LabVIEW等，可以直接测到声卡的波形。 -Hardware support to when the actual meaning of the oscilloscope, analog oscilloscope matlab, LabVIEW can directly measure the waveform of the sound card is required.

采用arduino MEGA2560做MODBUS从站，配合Labview或者维伦通HMI上位机主从通信，实现00000（读写线圈），10000（读开关量输入），30001（读模拟量），40001（读写保持寄存器即PWM）(Using arduino MEGA2560 do MODBUS from standing, cooperate with Labview or whalen HMI upper machine Lord from communication, achieve 00000