基于51单片机的微型51实时操作系统，麻雀虽小，可五脏俱全，可以很容易地撑握全局，深入实时嵌入式操作系统的学习-Based on 51 single-chip micro-51 real-time operating system, the sparrow, though small, can be a fully-equipped, you can easily shake up the overall situation, in-depth study of real-time embedd