XDS 530

from The Free On-line Dictionary of Computing (8 July 2008)

Xerox Data Systems Model 530
XDS 530

   <computer> (XDS 530) A computer from the {Scientific Data
   Systems} range, announced sometime after 1968 when {Xerox}
   bought out SDS.  The XDS 530 was probably under development at
   SDS before the buy-out but only announced afterwards.

   (2004-06-17)