○岩井仁司（所属なし）

This paper proposes n-fault-tolerant system with voting switches to mask any faults in the whole system that includes voters also. The multiplication of voting circuits is known as the measures for some failures of voting circuits. However, after all, one more voting circuit is needed on the external. This problem is caused so that the voting circuit is zero-fault-tolerant. But we have found new fault-tolerant voters that can mask any faults up to appointed “n”in themselves. The system with the voters is more superior to conventional ways, NMR etc. on their reliabilities.