Classification of 7-segment led displays ,The main results are as follows:
(1) By word height: the minimum word height of stroke display is 1mm (single chip integrated multi-bit digital tube word height is generally in 2~3mm). Other types of stroke displays can reach up to 12.7mm (0.5 inches) or even hundreds of mm.
(2) According to the color, there are several kinds of red, orange, yellow, green and so on.
(3) According to the structure, there are reflection cover type, single strip seven segment type and single piece integration type.
(4) There are two kinds of electrode connections from each luminous section: common anode and common cathode.