(a) logically XOR'ing each of two adjacent bits of said n-bit Gray code number when n is an even number, providing a first series of result bits, (b) logically XOR'ing each of two adjacent bits of said n-bit Gray code number, except said LSB, when n is an odd number, providing said first series of result bits; (c) logically XOR'ing each of two adjacent bits of said first series of result bits, whe