The number is stamped on the component side of the board.
The number is etched and drilled on both the component and solder side of the board.
The number is etched on the componet side of the board.
overall: 1/2 in x 12 in x 17 1/2 in
The object is a populated circuit board. Etched into one side is "FAIRCHILD SEMICONDUCTOR" and "DIGITAL SYSTEMS RESEARCH." The integrated circuits on the board are dated either 1969 or 1970. There are three wires on the solder side of the board.