the realtime operating system nucleus (TRON)
The Realtime Operating System Nucleus (TRON) is the kernel for a real-time operating system.
This kernel can be configured for a wide variety of emdedded systems. The TRON kernel is mainly used in Japan on smaller computers in distributed environments.
The real-time operating system TRON is available in many variants for business activities as business-TRON (BTRON), communication-TRON (CTRON), instance-TRON(eTRON) and industrial-TRON (ITRON).