Artifact Details

Title

4 inputs D.C. sense amplifier 4552D system building block

Catalog Number

102629806

Type

Physical object

Description

The object has a green board surrounded by an aluminum frame and a blue plastic connector. One side of the board is covered in components, including resistors, transistors, diodes, capacitors, and two transformers. There are also three inputs screwed to the frame at the extraction end. There are two inspection stamps. On the face of the frame some has written "4" on a piece of masking tape. The solder side has a printed circuit with a grid lettered A-Z.

Date

1965 ca.

Manufacturer

Digital Equipment Corporation (DEC)

Identifying Numbers

Model number	4225 D	Printed on the solder side at the insertion end of the board
Other number	4552	Stamped into the side of the aluminum frame
Serial number	0158394	Stamped into the aluminum frame on the side

Dimensions

overall: 1/2 in x 4 1/2 in x 10 1/4 in