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This document discusses real-time operating systems (RTOS) and embedded systems. It provides an overview of RTOS concepts like tasks, memory management, timers, I/O, and inter-process communication. It also describes the author's work developing several RTOS projects over the years including Orz Microkernel, RT nanokernel, Jamei RTOS, and CuRT. Examples of using RTOS for applications in areas like industrial automation, wireless sensor networks, and embedded devices are also mentioned.

















































































