Abstract
A fault tolerant adder implemented using Kogge-stone configuration can correct the error due to inherent redundancy in the carry tree but no error detection is possible. This proposed design is based on fault tolerant adder [1] that uses Sparse kogge-stone adder that is capable of both fault detection and correction. Fault tolerance is achieved by using two additional ripple carry adders that form the basis of triple mode redundancy adder. Triple mode redundancy is one of the most common methods used to create fault tolerant designs in both ASIC and FPGA implementations. The latency will be increased because of the voter in the circuit’s critical path. More advanced fault tolerant methods exist including roving and graceful degradation approaches. Allowing fault tolerance to operate at different levels of
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