CDC Kronos explained

Kronos
Developer:	Control Data Corporation
Supported Platforms:	CDC 6000 series and successors
Influenced By:	Chippewa Operating System
Latest Release Version:	Kronos level 439
Marketing Target:	Mainframe computers
Working State:	Historic
License:	Proprietary

Kronos is an operating system with time-sharing capabilities, written by Control Data Corporation in 1971.^[1] 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.^{[2] [3]}

The MACE operating system and APEX were forerunners to KRONOS. It was written by Control Data systems programmer Greg Mansfield, Dave Cahlander, Bob Tate and three others.

See also

• CDC SCOPE

Notes and References

1. Web site: CDC Operating System History Mar76. Control Data Corporation. 7 March 2023.
2. Web site: Kronos 2.1 Time-Sharing User's Reference Manual. Control Data Corporation. 25 July 2011.
3. Book: Lindsay, David S. . Proceedings of the 1976 ACM SIGMETRICS conference on Computer performance modeling measurement and evaluation - SIGMETRICS '76 . A hardware monitor study of a CDC KRONOS system . 1976-03-29 . https://doi.org/10.1145/800200.806190 . SIGMETRICS '76 . New York, NY, USA . Association for Computing Machinery . 136–144 . 10.1145/800200.806190 . 978-1-4503-7497-2. 18828764 .