Computing (FOLDOC) dictionary
Xerox Data Systems Model 940
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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) but never actually built any.
(2002-09-08)