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共阴和共阳数码管的点亮电平
Date:August 21, 2023 Views:874
1.共阴数码管
位选为低电平的时候,选中数码管。(因为位选本质上接的是公共端,和公共端的电平相同)
段选为高电平的时候,选中数码管的段位亮。(段选的电平和公共端的电平相反)
2.共阳数码管
位选为高电平的时候,选中数码管。
段选为低电平的时候,选中数码管的段位亮。
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