Artifact Details Title Read Write Switch 1987 C circuit board Catalog Number 102681621 Type Physical object Description Metal tag on end of board frame reads, "System Building Blocks, Digital Equipment Corporation, Maynard Massachusetts". Attached is a paper tag that has handwritten in ink, "Lifted copper". Manufacturer Digital Equipment Corporation (DEC) Identifying Numbers Model number 1987 C Other number 0171710 Etched on side of board frame Other number 1987 Etched on side of board frame Dimensions overall: 1/2 in x 7 in x 4 1/2 in Category Component/circuit board