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What is a PDP-12?
The PDP-12 is the name given to a series of minicomputers manufactured between the late 1960's through
to the early 1970's by a company then-called Digital Equipment Corporation (DEC).
DEC was bought out by Compaq, and now Compaq has merged with Hewlett-Packard.
The PDP-12 is unusual in that it has both a PDP-8/I and a LINC-8 inside of it.
During runtime, a program could "switch CPUs" and run on either CPU.
The PDP-12 had between 4k and 8k words (12-bit) of core memory in the main cabinet, and up to an additional 24k words
in a second cabinet [CORE MEMORY EXHIBIT].
Price in 1969: USD$27,900
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The PDP-12
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This PDP-12 was purchased from an individual in Georgia in January of 2002, and was kept
in heated storage for many years.
As of October, 2007, this PDP-12 is partially restored.
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The PDP-12 Expansion Cabinet
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Front view of the Expansion Cabinet, containing the following:
4 x MM8IA,
FPP12, 3 x DW08,
2 x DM01,
3 x PT08,
a TC58,
a BA12,
a CC02 (anyone know what that is?),
2 x H740D, 2 x 854, and what looks like an OMNIBus backplane as well.
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The above gives an accounting of where the currently known-about PDP-12's are located.
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Click the above to visit the full exhibit, showing lots of pictures of the insides!
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