3 bit shift register with buffer register 4230B system building block
Digital Equipment Corporation (DEC)
Printed on the soder side toward the insertion end
Stamped into the face of the aluminum frame
Stamped into the aluminum frame on the side
overall: 1/2 in x 4 1/2 in x 10 1/4 in
The object has a green board surrounded by an aluminum frame and a blue plastic connector with metal pins. One side contains various components including transistor, resistors, and capacitors. There are four round inspection stamps at the top of the board. the other side there is also a printed circuit and a lettered grid A-Z.