Artifact Details Title Multiplexer Switch 1578 A system building block Catalog Number 102729741 Type Physical object Description The board has many components of varying type surrounded by an aluminum frame and a blue plastic 22 pin male connector. There is a red sticker on the side of the frame that reads "Model 1578 5/4/63". Date ca. 1963 Manufacturer Digital Equipment Corporation (DEC) Place Manufactured Maynard, Mass. Identifying Numbers Model number 1578 A Printed on the solder side at the insertion end Part number 1578 Etched on the face of the aluminum frame Serial number 012006 Etcvhed on the side of the aluminum frame Dimensions overall: 1/2 in x 4 1/2 in x 7 in Category Component/module