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 傳統(tǒng)的以cpu為中心的程序控制方式難以滿足高速數(shù)據(jù)采集系統(tǒng)的需要,論文采用dma方式實(shí)現(xiàn)數(shù)據(jù)傳輸,由硬件代替軟件,大大提高了數(shù)據(jù)傳輸速度。