[TUHS] Curly braces: An evolution of UNIX and C

[Jonathan Gray via TUHS]

On Wed, May 20, 2026 at 06:16:52PM +0000, Thalia Archibald via TUHS wrote:
> On Wednesday, May 20th, 2026 at 03:12, sjenkin wrote:
> > Thalia,
> > You've knocked it out of the park, again!
> > 
> > You posed a question I'd not even thought of. 
> > [once used an ASR-33 on a Nova, then years using Telex in 1980's - same m/c ].
> > 
> > read your piece, excellent.
> > 
> > It took me ages to track down DMR's (?) list of tty's he'd used,
> > only to find it was you that posted the note to TUHS.
> > 
> > That list might belong in the current article, as it provides some context.
> > 
> > Was it Dennis who wrote that list, because it doesn't include the ASR-33 attached to the PDP-7.
> > 
> > all my best
> > steve j
> > 
> > ==============
> > 
> > Teletypes used for early Unix
> > 21 Jul 2025
> > <https://www.tuhs.org/pipermail/tuhs/2025-July/032302.html>
> > 
> > DMR's list of terminals
> > <https://www.tuhs.org/pipermail/tuhs/2025-July/032332.html>
> 
> That's Dennis' list of personal terminals at home. I'd then consider the 1970
> date for the Teletype Model 37 an approximate upper bound for when they started
> using the Model 37 at work. Dereferencing to the post in alt.folklore.computers,
> this could yield an even more precise date:
> 
> > It is true that word-processing and formatting (using Teletype model 37s) for
> > the Bell Labs patent group was the first productive application of Unix
> > outside our immediate group.
> 
> I had actually forgotten about that list. At the time I posted, I was looking
> for the specific sub-model number of the Model 37s they were using, so it didn't
> quite answer what I wanted. I already knew they were using the Model 37 and the
> 1970 date didn't help for that project. But it is useful for this post.

Perhaps also mention the GRAPHIC-2 keyboard and IBM terminal support?

"Our PDP-7 also had a full-ASCII keyboard that was part of the
locally-built Graphics-II processor attached to the PDP-7, used for
Space Travel, for example, and also for development once Unix was
self-supporting."
Dennis Ritchie, Feb 12 2011, alt.folklore.computers

"Console input devices are a light pen, an ASCII-code keyboard
(full seven-bit code), and eight pushbuttons."
William H. Ninke
A Satellite Display Console for a Multi-Access Central Computer
bitsavers pdf/att/Bell_Labs/graphics-2/Graphic-2_Overview.pdf

"Still, quite early Unix supported the half-duplex IBM 1050 and 2741
terminals, as had Multics and CTSS before that. It was a
bit of a struggle, but it worked."
Dennis Ritchie, Oct 31 2001, alt.folklore.computers

2741 is mentioned in the getty.s from the s1 tape
https://www.tuhs.org/cgi-bin/utree.pl?file=V2/cmd/getty.s