PDP-11/20 vd one that just says pdp 11 what are the date differences?? OEM?

[Pontus Pihlgren]

The PDP-11/20 was the first PDP-11. I believe the number was added when 
the other models came out, to discern them.

/P

On Mon, Feb 22, 2016 at 03:03:17AM -0500, COURYHOUSE at aol.com wrote:
> PDP-11/20  vd  one that just says  pdp 11  what are the  date differences?? 
> OEM?  was one  version  for customer and  one  for OEM?
> THANKS IN ADVANCE
>  
> Ed#  
>  
>