The first feedback mode is not a self correcting mode since errors in {HEAD ~ the output bit state} from {TAIL ~ the sampling stage} or from the feedback stage are not corrected 
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The first feedback mode is not a self correcting mode since errors in { HEAD ~ the output bit state } from { TAIL ~ the sampling stage } or from the feedback stage are not corrected
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH