一引言目前用于生产过程控制的微型机系统,大部分是经过改造,扩展后组成的。人们尽管在硬件上采取了很多抗干扰措施,也基本上保证了系统稳定可靠的运行,但外界干扰偶而仍会使微机失控,程序飞掉,或进入死循环,会给生产带来严重后果,为了防止上述危险的发生,可采用下面几种简单而实用的容错技术。 I. INTRODUCTION At present, most of the microcomputer systems used for the production process control are modified and expanded. Although people take a lot of anti-jamming measures in the hardware, and basically guarantee the stable and reliable operation of the system, external interference occasionally causes the computer to run out of control, the program flies away or enters an infinite loop, which will bring serious consequences to the production. In order to prevent the occurrence of these dangers, the following simple and practical fault-tolerant technology can be used.