Abstract
A logic system, which is capable of logical expression comprising processing members interconnected by transmission elements wherein the processing member resolves at least two or more input allowed values to one result allowed value, allowed values including one or more data values and one or more non-data values, at least one non-data value being a null value, the processing member changing its result value to a data value only when all of its presented input values are valid and changing its result value to a NULL value only when all of its presented input values are NULL values.