I have just finished browsing through your site, and am quite impressed. This certainly stirs old memories, good

and bad

.
I started with NCR in 1965 and worked the first 20 years as a field engineer on MOST of the systems listed on your site.
The last 21 years I have functioned in a support capacity of one sort or another, I am currently involved in the Teradata division
doing fault analysis coding for user reporting tools.