The traditional program control mode being cpu centre can not satisfy the requirement of the high speed data acquisition system . in this dissertation the dma mode is adopted to complete the data trasferring in which hardware replaces software partly and in the result the transferring speed improves greatly 传统的以cpu为中心的程序控制方式难以满足高速数据采集系统的需要，论文采用dma方式实现数据传输，由硬件代替软件，大大提高了数据传输速度。
