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从曲面形状测量的需要出发,通过对数据采集速度、286机DMA方式和8237ADMAC的分析,论述了测量数据采集DAM方式传送的必要性,给出了详尽的硬件线路及软件的编制原理。
Based on the need of surface shape measurement, the necessity of DAM mode transmission of measurement data acquisition is discussed through the analysis of data acquisition speed, 286 DMA mode and 8237ADMAC. The detailed hardware circuit and software compilation principle are given.