程序查询方式
程序查询方式-
由于系统采用的数据传送方式为程序查询方式，而数据采集和传送的过程都不能被中断。
Because the way of system Data transmittance are program inquiring , at the same time the acquisition and transmittance process cannot be interrupted .
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在微机控制的动态测试系统，数传一个字节的时间为31.25ns，若采用程序查询或中断方式实现A/D转换器与微机主存之间的数传，还很难在31.25ns内传输一个字节的数据；
In a dynamic test system controlled by computer , the transmission of a byte takes 31.25 ns . While by way of inquiry or interruption , the transmission of a byte can hardly be achieved in 31.25 ns .