▁had ▁up ▁to ▁ 1 2 , 2 8 8 ▁words ▁of ▁ 3 6 - bit ▁magnetic ▁core ▁memory , ▁in ▁one ▁to ▁three ▁banks ▁of ▁ 4 , 0 9 6 ▁words ▁each . ▁ ▁F ixed - point ▁numbers ▁had ▁a ▁one - bit ▁sign ▁and ▁a ▁ 3 5 - bit ▁value , ▁with ▁negative ▁values ▁represented ▁in ▁ones ' ▁complement ▁format . ▁Flo ating - point ▁numbers ▁had ▁a ▁one - bit ▁sign , ▁an ▁eight - bit ▁characteristic , ▁and ▁a ▁ 2 7 - bit ▁mant issa . ▁Inst ru ctions ▁had ▁a ▁six - bit ▁operation ▁code ▁and ▁two ▁ 1 5 - bit ▁oper and ▁addresses . ▁ ▁The ▁ 1 1 0 3 A ▁was ▁contemporary ▁with , ▁and ▁a ▁compet itor ▁to , ▁the ▁IBM ▁ 7 0 4 , ▁which ▁also ▁employed ▁vac u um - t ube ▁logic , ▁magnetic - core ▁memory , ▁and ▁floating - point ▁hardware . ▁▁ 1 1 0 4 ▁The ▁ 1 1 0 4 ▁system ▁was ▁a ▁ 3 0 - bit ▁version ▁of ▁the ▁ 1 1 0 3 ▁built ▁for ▁West ing house ▁Electric ▁in ▁ 1 9 5 7 , ▁for ▁use ▁on ▁the ▁BO MA RC ▁Miss ile ▁Program . ▁However , ▁by ▁the ▁time ▁the ▁BO MA RC ▁was ▁deployed ▁in ▁the ▁ 1 9 6 0 s , ▁a ▁more ▁modern ▁computer ▁( a ▁version ▁of ▁the ▁AN / US Q - 2 0 , ▁designated ▁the