Hardware platform of the system is composed of the signal source module, the signal conditioner and PCI-6111 card supplied by NI.
该系统硬件平台由自主开发的信号源模块和信号调理模块以及NI公司的PCI - 6111板卡组成。
Virtual Instrument Collection phonocardiogram source code, is based on the computer sound card, which determined the sound signal and spectrum analysis.
心音采集的虚拟仪器源代码，是基于计算机声卡的，里面有心音信号和频谱分析等。
Data record unit complete data acquisition, which records analog quantity data, parallel and serial digital data, parallel and serial graphic data from the signal source to CF card.
数据记录单元完成数据采集，把信号源发送的模拟量数据、并行和串行数字量数据、并行和串行图形数据记录到存储设备的CF卡上。
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