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在引入Ｂａｄａｌ线性调焦系统的基础上，作者设计了ＴＰ８０１单板机与激光散斑验光仪的硬件接口，实现了单板机时验光数据的自动采集、计算和测试结果的汉字打印。
Based on the introduction of Badal linear focusing system, the author designed the hardware interface between the TP801 single-chip laser and the laser speckle refraction meter, and realized the automatic acquisition and calculation of the optometry data of the single-board computer and the Chinese character printing of the test results.