vc进行NI daq卡的模拟数据采集，只处理了单点单通道的过程。结果保存在DATA\下面。 前提：可能需要机器上装有daq卡，或模拟daq卡。-NI daq card vc for analog data acquisition, only single-point single-channel process. The results stored in the DATA \ below. Premise: the machine may be needed with daq card,