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FlexOS is a discontinued modular real-time multiuser multitasking operating system (RTOS) designed for computer-integrated manufacturing, laboratory, retail and financial markets. It was developed by Digital Research's Flexible Automation Business Unit in Monterey, California, in 1985.

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inception
1986-00-00
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  • Overview
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  • {{anchor|4680 OS|4680OSV1|4680OSV2|4680OSV3|4680OSV4|4680OSV1R1|4680OSV1R2|4680OSV1R3|4680OSV2R1|4680OSV3R1|4680OSV4R1}}IBM 4680 OS
  • {{anchor|IBM 4690 OS}}IBM and Toshiba 4690 OS
  • Siemens S5-DOS/MT
  • CTM
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FlexOS is a discontinued modular real-time multiuser multitasking operating system (RTOS) designed for computer-integrated manufacturing, laboratory, retail and financial markets. It was developed by Digital Research's Flexible Automation Business Unit in Monterey, California, in 1985.

The system was considered to become a successor of Digital Research's earlier Concurrent DOS, but with a new, modular, and considerably different system architecture and portability across several processor families. Still named Concurrent DOS 68K and Concurrent DOS 286, it was renamed into FlexOS on 1 October 1986 to better differentiate the target audiences.

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