▁specific ▁codes . ▁After ▁one ▁of ▁these ▁codes ▁changed , ▁making ▁an ▁expensive ▁computer ▁ob sole te , ▁the ▁team ▁convinced ▁the ▁Navy ▁that ▁the ▁only ▁way ▁to ▁make ▁a ▁system ▁that ▁would ▁remain ▁useful ▁was ▁to ▁build ▁a ▁fully ▁program m able ▁computer . ▁The ▁Navy ▁agreed , ▁and ▁in ▁ 1 9 4 7 ▁they ▁fund ed ▁development ▁of ▁a ▁new ▁system ▁under ▁" Task ▁ 1 3 ". ▁ ▁The ▁resulting ▁machines , ▁known ▁as ▁" Atlas ", ▁used ▁drum ▁memory ▁for ▁main ▁memory ▁and ▁featured ▁a ▁simple ▁central ▁processing ▁unit ▁built ▁for ▁integer ▁math . ▁The ▁first ▁Atlas ▁machine ▁was ▁built , ▁moved , ▁and ▁installed ▁at ▁the ▁Army ▁Security ▁Agency ▁by ▁December ▁ 1 9 5 0 . ▁A ▁faster ▁version ▁using ▁Williams ▁tub es ▁and ▁drums ▁was ▁delivered ▁to ▁the ▁NS A ▁in ▁ 1 9 5 3 . ▁ ▁Com mer cial ization ▁The ▁company ▁turned ▁to ▁the ▁task ▁of ▁s elling ▁the ▁systems ▁commer cially . ▁Atlas ▁was ▁named ▁after ▁a ▁character ▁in ▁the ▁popular ▁com ic ▁strip ▁Bar nab y , ▁and ▁they ▁initially ▁decided ▁to ▁name ▁the ▁commercial ▁versions ▁" M abel ". ▁Jack ▁Hill ▁suggested ▁" 1 1 0 1 " ▁instead ; ▁ 1 1 0 1 ▁is ▁the ▁binary ▁representation ▁of ▁the ▁number ▁ 1 3 . ▁The ▁E RA ▁ 1 1 0 1 ▁was ▁public ly ▁announced ▁in ▁December ▁ 1 9 5 1 . ▁Atlas ▁II , ▁slightly ▁modified ▁became ▁the ▁E RA ▁ 1 1 0