In this paper, we present BabyOS, a compact educational kernel designed to facilitate the preliminary learning of operating systems. It is an in-memory system running on real hardware, with a multi-phase project covering concurrency, scheduling, inter-process communication, memory management, and networking. Compared with other educational operating systems, BabyOS is a nontraditional project frame; an important distinction lies in that it reflects some design ideas in embedded operating systems. In this way, BabyOS provides a complementary approach to educational operating system projects.
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