Real-time fault tolerant full adder using fault localization

Abstract

Computer complicacy results in a rise up the tendency to fail. A system needs to be built that will recognize the existence of faults and incorporates techniques to will tolerate these faults without troublesome the normal operation. In this paper, we deal with the self-checking full adder and the self-repairing full adder circuit. A proposed self-checking circuit designed such that it can find transient as well as permanent fault depend on internal process and it is able to detect multiple faults at the same time. On the other hand, at the same time, these multiple faults have been repaired by the self-repairing full adder. Both the proposed circuit area efficient and able to recognize and correct multiple faults. The resulting self-repairing circuit occupied less area as compared to the previous circuit and its offer 100 percent detection and correction of the fault.