Photomultiplier tube from light pen used on the PDP-1, removed during PDP-1 restoration project
This is a color digital image of a photomultiplier tube from a light pen used on the PDP-1. The tube is resting on an air bubble wrap used for packing materials. Stamped on the tube in brown ink is "931A" and is surrounded by an octagonal shaped symbol. The RCA brand logo is also stamped on the tube as well.
Computer History Museum
Place of Publication
Mountain View, Calif., U.S.
Digital Image; Digital photograph; Identification photograph; Publicity photograph
PDP-1 (Computer); Digital Computer Corporation (DEC)
Created by the Computer History Museum PDP-1 restoration team