The 8-bit LED dynamic display circuit of ICM7218A

Published:2011/6/10 3:53:00 Author:qqtang | Keyword: LED dynamic display, 8-bit | From:SeekIC

The 8-bit LED dynamic display circuit of ICM7218AIn the figure is the 8-bit LED hardware scanning dynamic displayer consisting of 8031 and ICM7218A. As ICM7218A has functions of both software decoding and hardware decoding, so there two ways to make the displayer indicate HELLO-92 , which are software decoding and hardware decoding. The following will introduce them respectively.The software decoding programmingFirstly, find out the code of the letters that need to indicate. According to the corresponding relationship between a,b ,c,d,e,f,g and data bit, we can get that in H, a and d are 0, the others are l, i.e 10111110 or BEH.



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