FYI. I sent this to one of the lead DOC people from the old days to see if she knew.
Here is her answer.
Begin forwarded message:
From: "Janet Egan"
Date: October 11, 2019 at 7:53:16 PM EDT
To: "'Clem Cole'"
Subject: RE: Curious Question from the Ether about use of Upper and Lower case at DEC
Hi Clem,
Hmm, I don’t remember whether the style guide addressed that. In the docs for RSX-11M
and such I always wrote it “PDP-11”, that is upper case with the dash. I do remember the
logo on the machine as always lower case with no dash. The PDP-8 had the same style logo.
And you’re right about seeing the lower case on the cover of the handbooks. I have never
seen the lower case with the dash or the upper case without it. I don’t think I still have
my copy of the style guide. Maybe I’ll take a look around my archives for it.
What a fun question to be thinking about .
Janet
From: Clem Cole
Sent: Friday, October 11, 2019 9:47 AM
To: Janet Egan
Subject: Curious Question from the Ether about use of Upper and Lower case at DEC
Janet,
I'm part of The Unix Historical Society (TUHS) mailing list and a topic came up
that I thought you might be able to shed some light on. The observation was that
'DEC seemed to have a schizophrenic attitude to wrt to use of upper and lower case
WRT to the PDP-11 brand,' i.e. sometimes using "PDP-11" and sometimes
"pdp11" (but I note rarely if ever PDP11 or pdp-11) . For instance, the logo on
the system itself was all lower: PDP-11/40 but DEC documentation mostly used uppercase in
the text; but when used on the places like the cover could be either e.g. the "pdp11
peripherals handbook" to transcribe the cover exactly but it uses upper case
"PDP-11" several times on pg 1-1 and the same on the binding. But I could not
find examples of pdp-11 or PDP11, i.e. if all lower it was with the dash or all upper
without.
Do you remember if there were rules or guidelines and if so what they might have been?
Thanks,
Clem