Artifact Details Title 4606 System Building Block Catalog Number 102656291 Type Physical object Description "PULSE AMPLIFIER" on solder side. Portion of one land pattern has peeled up off PCB. Two indecipherable script letters written in orange crayon on both solder side and component side: possibly "ry". Date 1965 ca. Manufacturer Digital Equipment Corporation (DEC) Identifying Numbers Other number 4606F on solder side Serial number 0218039 Dimensions 1/2 x 7 x 4 1/2 in. Category Component: circuit board / module