30 Dec
2016
30 Dec
'16
2:04 a.m.
On Fri, Dec 30, 2016 at 07:40:26AM +0000, Rod Smallwood wrote:
Hi
The pictures are for reference. I redraw all panels to get the
separations for silk screening.
Rod
Ok, I'll try to take som pictures tonight.
Also, I'd like to elaborate regarding rack headers and why there are so
many.
There seems to be at least 6 degrees of freedom for variation.
1. Computer family and model (e.g. PDP-8, PDP-11, PDP-11/70)
2. Rack type, the earlier shorter racks had metal headers without
rounded corners (see PDP-8/i). Lowboy racks have a slanted header
with deeper frame.
3. Intended market. Lab systems was green, industrial was blue/red. (The
PDP-12 was available in orange, blue and green)
4. Place of manufacture. The PDP-11 header had either "galway ireland"
or "maynard massachusets" printed on them (possibly other places)
5. OEM's had their own designs.
6. Specific systems packaged had their own name and color. I have a
PDP-11/34 with a blue header that says "GAMMA-11"
I'll provide examples of some of these. Others can be found online.
/P