The principle of the former is to control characterheight like stylus printer while the principle of the latter is quite different.
前者的字符高度的控制方法类似针式打印机,而后者的控制原理则完全不同。
2
Liquid crystal, 3 digit Characterheight 9.4 mm Indication capabilities Lowest Highest value: value: The series 801 display modules can be fitted on all …
液晶,3位字符高度9.4毫米指示功能,最低最高值:值 :801显示模块 ,可安装在所有 系列…
3
One em is the width and height of one “m” character (using whatever font size a website is set to).