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PDP-8 Minis
PDP-8/I
PDP-8 (0)
PDP-8/A
PDP-8/E (3)
PDP-8/F
PDP-8/I
PDP-8/L
PDP-8/M (2)
PDP-8/S (0)
Reference
PDP-11 Minis
PDP-11/R20
PDP-11/10
PDP-11/20
PDP-11/R20
PDP-11/23
PDP-11/34
Reference
PDP-12 Minis
PDP-12 Front View
PDP-12
Reference
Calculators
Front View of HP-9100
HP-9100B
Monroe 630
Tektronix 909
Test Equipment
Front View of HP-3440
GR-1683
HP-3440
Marconi 2955B
Miscellaneous
Front View of IBM 360 Front Panel
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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


The PDP-12


PDP-12 Front View S M L XL

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.


The PDP-12 Expansion Cabinet


PDP-12 Expansion Cabinet Front View S M L XL

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.


PDP-12's Around the World


The above gives an accounting of where the currently known-about PDP-12's are located.


Visit the full exhibit


Click the above to visit the full exhibit, showing lots of pictures of the insides!

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Master Reference
PDP-12 is alive!
New machine: PDP-8/L

Contact us This page was updated on Fri Feb 19 00:10:09 EST 2010 © 2000-2007 by Robert Krten.
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