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双位数码管封装尺寸有什么？数码管按段数可分为？

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双位数码管封装尺寸有什么？数码管按段数可分为？

浏览：47次 | 提问时间： 07-24 09:46

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3个答案

爱太狠会爆炸 07-24 09:47

双位数码管封装尺寸有：20mm30mm两种。数码管特点：数码管按段数可分为七段数码管和八段数码管，八段数码管比七段数码管多一个发光二极管单元（多一个小数点显示）；按能显示多少个“8”可分为1位、2位、3位、4位、5位、6位、7位等数码管；按发光二极管单元连接方式可分为共阳极数码管和共阴极数码管。共阳数码管是指将所有发光二极管的阳极接到一起形成公共阳极(COM)的数码管，共阳数码管在应用时应将公共极COM接到+5V，当某一字段发光二极管的阴极为低电平时，相应字段就点亮，当某一字段的阴极为高电平时，相应字段就不亮。共阴数码管是指将所有发光二极管的阴极接到一起形成公共阴极(COM)的数码管，共阴数码管在应用时应将公共极COM接到地线GND上，当某一字段发光二极管的阳极为高电平时，相应字段就点亮，当某一字段的阳极为低电平时，相应字段就不亮。

念゜ 07-24 09:55

双位数码管封装尺寸有2种，数码管按段数可分为七段数码管和八段数码管，八段数码管比七段数码管多一个发光二极管单元，也就是多一个小数点（DP）这个小数点可以更精确的表示数码管想要显示的内容；按能显示多少个（8）可分为1位、2位、3位、4位、5位、6位、7位等数码管。

女汉子是最坚强的 07-24 10:03

数码管按段数可分为七段数码管和八段数码管，八段数码管比七段数码管多一个发光二极管单元，也就是多一个小数点（DP）这个小数点可以更精确的表示数码管想要显示的内容；按能显示多少个（8）可分为1位、2位、3位、4位、5位、6位、7位等数码管，十六段数码管就是有16个二极管单元

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