嵌入式软件设计规范。嵌入式软件可靠性应达到的判定标准是判错、防错、纠错、容错。同时，系统工程师应考虑到为实现判、防、纠、容而需要配套的硬件设计。-Embedded software design specifications. Embedded software reliability criteria to be met is a wrong ruling, error prevention, error correction, fault-tolerant. At the same time, the system engineer should take into account to achieve the sub-contractor defense, correct, tolerance and need supporting hardware design.