The ETRI 9601-30B is a high-performance industrial operating system from ETRI (Electronics and Telecommunications Research Institute) in South Korea. It is an ANSI-C compliant 32/64-bit multi-tasking, multi-user, real-time operating system. Design features include support for multiple CPUs, Ethernet, local buses, RS-232, and other industrial serial devices. It is intended for use in industrial applications such as process control, factory automation, embedded systems and intelligent devices.