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BCD
- BCD\七段显示译码器 数码管段显示发光二级管是共阴连结,所以显示高电平有效,即哪一段的驱动信号为高电平,则对应段发亮-BCD \ seven-segment display decoder digital tube sections show light-emitting diode is a link to a total of yin, it showed high and effective, that is what section of the drive signal is h