Printed in solder toward the insertion end of the frame
Stamped into the aluminum face of the frame
Stamped into the aluminum on the side of the frame
overall: 1/4 in x 4 1/2 in x 7 in
The 3 bit parity circuit 1130E system building block consists of a green board with an aluminum metal frame and a blue plastic connector. There are transistors of various sizes as well as resistors and capacitors arranged neatly around the half of the board closest to the connector. The red letters "NP" are molded into the board. The specs have been sent to archives.