xerox data systems model 940

1 definition found

xerox data systems model 940 - Free On-line Dictionary of Computing (26 May 2007) :

  Xerox Data Systems Model 940
  SDS 940
  XDS 940
  
     <computer> (SDS 940, XDS 940) A time-sharing system,
     announced in February 1966, developed by Scientific Data Systems
      with help from The University of California at Berkeley
      and Tymshare.  SDS 940 was backward compatible
     with SDS's previous systems (except the 12-bit SDS 92).  It
     had monitor and user modes, dynamic program relocation,
     automatic memory fragmentation, and system protection.
  
     After 1968 Xerox bought out SDS and renamed the SDS machines
     "Xerox Data Systems" (XDS).  Xerox then produced the XDS 530
     .
  
     (2004-06-17)