Xerox Operating System
Encyclopedia
XOS was an operating system for the XDS
Sigma line of computers "optimized for direct replacement of IBM DOS/360 installations" and to provide real-time
and timesharing support .
XOS was developed, beginning in 1969, for Xerox by the French firm CII (now Bull
).
XOS was more successful in Europe than in the US, but was unable to compete with IBM. By 1972 there were 35 XOS installations in Europe vs. 2 in the US.
Scientific Data Systems
Scientific Data Systems, or SDS, was an American computer company founded in September 1961 by Max Palevsky, a veteran of Packard Bell and Bendix, along with eleven other computer scientists. SDS was an early adopter of integrated circuits in computer design and the first to employ silicon...
Sigma line of computers "optimized for direct replacement of IBM DOS/360 installations" and to provide real-time
Real-time operating system
A real-time operating system is an operating system intended to serve real-time application requests.A key characteristic of a RTOS is the level of its consistency concerning the amount of time it takes to accept and complete an application's task; the variability is jitter...
and timesharing support .
XOS was developed, beginning in 1969, for Xerox by the French firm CII (now Bull
Groupe Bull
-External links:* * — Friends, co-workers and former employees of Bull and Honeywell* *...
).
XOS was more successful in Europe than in the US, but was unable to compete with IBM. By 1972 there were 35 XOS installations in Europe vs. 2 in the US.