实用电子钟,为六位数码管时钟程序直接使用,p3.2,p3.3,p3.4,p3.5 四键控制！实测24小时误差5秒。-Practical electronic clock, nixie tube clock for the six programs used directly, p3.2, p3.3, p3.4, p3.5 four key control! Measured 24-hour error of 5 seconds.
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