传统的数据采集仪器（如示波器、频谱仪等）尽管采集速率大，但往往功能单一，且造价昂贵，不适合用于多通道、低速率的场合。使用LabVIEW编写的虚拟仪器，功能强大且易于开发，能方便地实现数据实时显示和保存。-Traditional data collection instruments (such as an oscilloscope, spectrum analyzer, etc.) even though a large collection rate, but often single fun