用于开发虚拟仪器的操作系统，包括建立系统，产生所需要的信号-For the development of virtual instruments operating systems, including the establishment of the system to produce the required signal

声波处理的vc程序，可以用在虚拟仪器上，并带有vb例子-Vc sonic treatment process can be used in the virtual instrument, and an example with vb