本文给出了混合/单工余裕微处理机系统的可靠率数学模型,主要讨论了系统的间接设备—切换装置、同步器所形成的“硬核”部件和分布在各模块上的部件对系统可靠率的影响. In this paper, the mathematical model of the reliability of the mixed / simplex margin microprocessor system is given. The indirect equipment of the system - the switching device, the “hard core” component formed by the synchronizer and the components distributed on each module Impact on system reliability.