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This design combines the concepts of light drawing and letter press, it offers a special way for entertainment and learning. Children can press each pixel LED down and it will shine, so children may draw a light picture which is composed with some shine pixels, of course, when pressed again, the pixel is rebounded and dark off. This design can be used as letter press, because the shining pixels sink behind the surface but extrude in surface, there are ink in surface. So when pressed down, the extruded pixels will touch their surface to the paper and there may ink trail left, such kind of operation mode is just like Letter Press.