Abstract: A signal selection system has input thereto a plurality of redundant input signals having varying values along with signals indicative of the validity of the plurality of input signals, comparison logic compares all possible pairwise combinations of the input signals to determine which input signal in each of the input signal pairs has the greater value or to determine if the input signals in each pair have equal values. Mid value selection logic determines which one or more of the values of the input signals from the plurality of valid input signals are to be used to determine the output signal according to a mid value selection criterion. The selection logic has a plurality of combinational logic elements arranged to execute predetermined Boolean logic equations in determining which one or more of the values of the input signals from the plurality of valid inputs are to be used to determine the output signal according to the predetermined mid value selection criterion.