It is dedicated to the description of design and implementation of a embedded file system based on NiosⅡ embedded soft core processor and SD card,a portable data acquisition system is designed based on the embedded file system and FPGA.%在NiosⅡ软核处理器上采用SD卡设计了一种嵌入式文件系统,并在该文件系统和FPGA的基础上设计了一种便携式数据采集系统.
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