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|Developer||Control Data Corporation|
|Latest release||Kronos level 439|
|Marketing target||Mainframe computers|
|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, which were succeeded by the NOS/VE operating system in the mid-1980s.
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