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

[Paul Birkel]

I wonder how long it took them to "figure it out"?  I seems that the
family-plan dates to April 1969.

June 1970 seems to be generally quoted as the introduction date for the
PDP-11/20.  And then June 1972 for the 11/10.

My PDP-11 is labeled as "S-386" and dated 9/23/70, which I guess makes it
fairly early in the production run (but I do wonder what the initial
manufacturing rate was given the relative riskiness of this new
architecture).  Anyone have S# and dates for "plain 11" vs. 11/20-marked for
comparison?

-----Original Message-----
From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of Pontus
Pihlgren
Sent: Monday, February 22, 2016 3:27 AM
To: General Discussion: On-Topic and Off-Topic Posts
Subject: Re: PDP-11/20 vd one that just says pdp 11 what are the date
differences?? OEM?

On Mon, Feb 22, 2016 at 03:25:36AM -0500, Paul Birkel wrote:
> Which has always struck me as a bit odd, since the PDP-11 family was 
> designed to be just that, a family.  So you'd think that "marketing" 
> would have kept that in mind when designing the first front panel label
...
> 

Indeed, and it's just something I've "heard" so there might actually be
another reason.

/P