Based on pulse countingprinciple, the high precision time interval can be obtained by measuring the number of the high-frequency reference clock through it.
At present electronic theodolite has been used widely in Angle measuring, according to the Angle measuring principle can be divided into incremental counting method and absolute coding method.
电子经纬仪是目前应用较为广泛的角度测量仪器，按其角度测量原理可分为增量计数法和绝对编码法。
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This paper introduces the composition of coating equipment , analyses the working principle of the control system of electrical appliance and introduces the design plan of counting equipment.