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  • Tags: DEC

2026.155e.jpg
An enlarged copy of a Hager cartoon that hung in Jack Knowles, Engineer, office as a competition reminder. The "Watch out for the competition" statement was added by DEC.

2026.87ef.jpg
The mill on the left was headquarters for the Digital Equipment Corporation.
Adjacent to the mill in the center is the Assabet River and Walnut Street.
The right shows downtown Maynard, Nason and Main Sts.

mhs-2026.76.pdf
A partial review of the engineering culture at DEC praising and critiquing the strurcture the company has developed.

mhs-2026.73.pdf
This is a 1991 DEC employee directory of services in the Mill complex including phone numbers, times of operation, and location: building number, floor, pole number (e.g., MLO3-1, Pole 46C). The brochure also included a map of the complex and the…

mhs-2026.72.pdf
A faded list of the characteristics that define real "Millrats", a DEC cultural term (of sorts) for a Digital employee who has worked in the Maynard Mill for a long time.

mhs-2026.71.pdf
This is a 1990 DEC employee guide to the available conference rooms within the Mill Complex . The company named conference rooms after people and other cultural references to Maynard and the vicinity and Digital Equipment Corporation history.

mhs-2026.70.pdf
A one-sheet folding brochure with basic information about the Digital Parker Street site (site code "PKO") which consisted of 3 buildings: 2 small buildings PKO1, PKO2, and the larger PKO3. There was also a helicopter pad and the adjacent DCU…

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. …