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  • Tags: PDP

mhs-2026.69.jpg
A photograph of the KDF-11B is a CPU processor module developed by Digital Equipment Corporation (DEC) for its PDP-11 family of 16-bit minicomputers. The KDF-11B board is associated with the PDP-11/23+.

Technically, the KDF-11B is a quad-height…

mhs-2026.68.jpg
This is a marketing photograph of a late 1960s / early 1970s Digital Equipment Corporation computer module. While no model number is visible, based on labeling and other photographs that accompanied it, it appears to be a PDP-9 A-D Converter Option:…

mhs-2026.67.jpg
A photo of a Digital Equipment Corporation wire-wrapped backplane assembly for the PDP-9 computer.

This photograph demonstrates the design philosophy of DEC computer design in the late 1960s and early 1970s: a wire-wrapped (no solder) insulated…

mhs-2026.66.jpg
A Digital Equipment Corporation PDP-9 being manufactured/tested within a lab in the Mill complex.

A note states that the gentleman in the right side of the photo is Frank Capone.

The notation at the bottom of the photograph implies that this…

mhs-2026.65.jpg
A photo of what is possibly a PDP-9 4K magnetic core memory module / backplane assembly using coincident-current magnetic core memory (see COINC DUAL label)

The top panel shows: DATA ADDRESS Indicators labeled 2048 and 4096
A/B memory sections. …

mhs-2026.64.jpg
Photograph showing the inside of several PDP-9 cabinets. The Digital Equipment Corporation's PDP-9, a minicomputer that was introduced in 1966 and used discrete transistor logic.

mhs-2026.63.jpg
A marketing/catalog photograph of Digital Equipment Corporation's PDP-9, a minicomputer that was introduced in 1966 and sold about 400 units.

mhs-2024.518.pdf
A short booklet describing the capabilities of the PDP-14 Programmable Controller

2023.46e1.jpg
Programmed Data Processor-5 instruction manual

2023.45e1.jpg
Programmed Data Processor-4 instruction booklet.

2023.44e1.jpg
Programmed Data Processor-1 instruction handbook.

2023.26e.jpg
This is a control panel blank that appears to be related to a disk drive or disk drive controller: all of the sections of the panel refer to the classic magnetic disk addressing scheme of cylinder/head/sector, data handling, and error…

2022.66e.jpg
A poster outlining the development of products by the company from 1958 though 1983.