Add one adder

Claim 1

AN ADDER WHEREIN THE DIGITAL POSITIONS OF THE AUGEND, ADDEND AND SUM ARE SUCCESSIVELY SUBDIVIDED A PLURALITY OF TIMES THEREBY FORMING GROUPS WITHIN GROUPS IN A PLURALITY OF SIZE LEVELS, THE GROUPS OF ALL BUT THE LOWEST SIZE LEVEL HAVING A RELATIONSHIP OF HIGHER LEVEL IN RESPECT TO GROUPS OF NEXT LOWER LEVEL, EACH GROUP OF DIGITAL POSITIONS THEREBY HAVING A SUBAUGEND, A SUBADDEND, AND TRUE SUBSUM, COMPRISING IN COMBINATION; DIGITAL INPUT MEANS IN EACH OF THE LOWEST LEVEL GROUPS FOR SUPPLYING SIGNALS CODED TO REPRESENT THE RESPECTIVE SUBAUGEND AND SUBADDEND, CARRY INPUT MEANS FOR THE LEAST SIGNIFICANT DIGITAL POSITION OF EACH OF SAID LOWEST LEVEL GROUPS, CARRY PROPAGATE MEANS IN EACH OF SAID LOWEST LEVEL GROUPS, RESPONSIVE TO THE RESPECTIVE DIGIT INPUT MEANS FOR PRODUCING A CARRY PROPAGATE SIGNAL WHEN THE SUBAUGEND AND SUBADDEND VALUES ARE SUCH THAT DURING THEIR ADDITION A CARRY INTO THE CARRY INPUT MEANS OF THE LEAST SIGNIFICANT DIGITAL POSITION OF SAID LOWEST LEVEL GROUP WOULD PROPAGATE THROUGH THE ENTIRE RESPECTIVE GROUP OF DIGITAL POSITIONS, CARRY GENERATE MEANS IN EACH OF SAID LOWEST LEVEL GROUPS, RESPONSIVE TO THE RESPECTIVE DIGIT INPUT MEANS FOR PRODUCING A CARRY GENERATE SIGNAL WHEN THE RESPECTIVE SUBAUGEND AND SUBADDEND VALUES ARE SUCH THAT DURING THEIR ADDITION A CARRY WOULD PROPAGATE OUT OF THE RESPECTIVE GROUP OF DIGITAL POSITIONS IRRESPECTIVE OF WHETHER THERE WAS A CARRY INTO THE RESPECTIVE GROUP, HIGHER LEVEL GROUP CARRY PROPAGATE MEANS WITHIN EACH HIGHER LEVEL GROUP ADAPTED TO BE RENDERED OPERATIVE WHEN EACH LOWER LEVEL GROUP WITHIN SAID HIGHER LEVEL GROUP PRODUCES A CARRY PROPAGATE SIGNAL, HIGHER LEVEL GROUP CARRY GENERATE MEANS WITHIN EACH HIGHER LEVEL GROUP ADAPTED TO BE RENDERED OPERATIVE IN RESPONSE TO ANY OF THE FOLLOWING CONDITIONS: (1) A CARRY GENERATE SIGNAL FROM THE LOWEST ORDER, LOWER LEVEL GROUP WITHIN SAID HIGHER LEVEL GROUP PLUS A CARRY PROPAGATE SIGNAL FROM EACH NEXT HIGHER ORDER GROUP OF SAID LOWER LEVEL GROUPS,