Artifact Details Title Logic Unit Catalog Number 102727979 Type Physical object Date 1954 ca. Dimensions overall: 7 in x 3 1/2 in x 8 in Description There are 12 vacumn tubes on the top of the unit as well as 4 pinch tipped bulds. There are 27 banana plug pins on the bottom of the unit that are connected to the tube sockets with carbon resistors. Category Component/vacuum tube Credit Gift of Gene M. Amdahl Lot Number X1040.90