Fault tolerance requires the inclusion of redundant information. In this paper an on-line error detecting adder is presented in which the redundant information serves a dual purpose. It provides fault tolerance during the arithmetic operations while also providing a method by which addition is constrained to become a constant delay operation regardless of the word size of the operands.
['Whitney J. Townsend', 'Jacob A. Abraham', 'Parag K. Lala']
On-line error detecting constant delay adder