二维码的编解码标准2(dm)

DataMatrixisatwo-dimensionalmatrixsymbologywhichismadeupofnominallysquaremodulesarranged withinaperimeterfinderpattern.Thoughprimarilyshownanddescribedinthisdocumentasadarksymbol onlightbackground,DataMatrixsymbolscanalsobeprintedtoappearaslightondark.