The binary is obviously a date, 8-3-1956. That's the year that my grandfather and his collaborators finished the ARMAC computer. So my first hypothesis is that it's a commemorative plate for that. If so, the pictures may have something to do with this computer.

The words at the bottom are the motto of early modern Dutch scientist Simon Stevin. It means something like: "It's a miracle, but not a miracle", indicating the power of science to explain the seemingly miraculous.

@victorgijsbers My first thought is that the top center diagram shows core storage, the dominant form of RAM from the mid-1950s through the late-1970s, and the ARMAC used core (p 9 of https://apps.dtic.mil/sti/pdfs/AD0694623.pdf). The other two may represent other planes; each plane is one bit of many words. The diagram at the right is a hysteresis diagram, which is correct for core storage. (Core used a 2D arrangement of ferrite cores, though there was third diagonal wire woven through.)

@SteveBellovin @victorgijsbers I agree, the top one is definitely core memory (see https://ub.fnwi.uva.nl/computermuseum/CoreMemory.html for some pictures). The other ones below are bit sets, but to decipher it the order of the memory must be known.