Computer History Museum

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.

Item Details

Date
2005-05 (Made)
Type
Still Image
Catalogue number
102664948
Other identifying number
DEC PDP-1 (OTHER IDENTIFYING NUMBER)
Organization
Computer History Museum (Publisher)
Category
Digital Image
Identification Photograph
Publicity Photograph
Credit line
Computer History Museum
Place of publication
North America/USA/CA/Mountain View
Acquisition number
X3509.2006
Subject
Digital Computer Corporation (DEC), PDP-1 (Computer)