[TUHS] Video of PDP-7 with Graphics-2?

Warner Losh imp at bsdimp.com
Fri Aug 16 08:46:21 AEST 2019

On Thu, Aug 15, 2019 at 4:08 PM Warner Losh <imp at bsdimp.com> wrote:

> On Fri, Aug 2, 2019 at 5:04 PM Warren Toomey <wkt at tuhs.org> wrote:
>> On Fri, Aug 02, 2019 at 06:49:19PM -0400, Jim Carpenter wrote:
>> > On 8/2/19 4:14 PM, Warren Toomey wrote:
>> > > Hi all, I'm chasing the Youtube video of the PDP-7 at Bell Labs where
>> > > people are using it to draw circuit schematics.
>> >
>> > A Bell Labs video? The only Bell Labs video I remember seeing that had
>> > someone doing circuit schematics had it being done on a PDP-5. The -7
>> was
>> > shown later doing music stuff. (That's the -7 that I thought maybe Unix
>> > started life on.)
>> Thanks Jim, Is it this one?
>> https://www.youtube.com/watch?v=iwVu2BWLZqA
>> They mention a Graphics-1 device, so maybe I'm getting this confused
>> with the PDP-7 and the Graphics-2.
> The early one for the circuit simulator is definitely on a PDP-5 and I
> presume the Graphics-1 display. You can see the PDP 5 letters on one of the
> cabinets. How do you know that the music was composed on the PDP-7 that
> appears from 9:20-10:30? Cool paper tape feeding sequence, though, you
> gotta admit :) (well, unless you waited for far too many of those to run
> back in the day).

Oh! I've found the right set of photos to make a good case this is a


has an early version of a slide I'll be using in my talk next month.


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