IBM Vacuum Tubes Used in Early Computer Equipment

Above tubes are from the 1940's and 1950's. Included are an IBM 5998, plugable units with 6J6 tubes,
and plugable units with 6211 tubes. Some of these tubes were used in the early IBM 604 computer,
early IBM core memory units and early IBM build FAA computers.
(Photo courtesy of Steve Emery)


IBM Vacuum Tubes Used in Early Equipment (1950's, some early 1960's)

IBM 25L6 (above)


See also "Evolution of the Vacuum Tube."



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