CDC KRONOS
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KRONOS
Working state Historic
Initial release 1970s
Latest stable release KRONOS level 439
Marketing target Mainframe computers
Supported platforms CDC 6000 series and successors
KRONOS is an operating system with time-sharing capabilities, written by Control Data Corporation in the 1970s. KRONOS ran on the 60-bit CDC 6000 series mainframe computers and their successors. CDC replaced KRONOS with the NOS operating system in the late 1970s.
The MACE operating system was the forerunner to KRONOS. It was written by Control Data systems programmer Greg Mansfield.

