unit record equipment unit record equipment unit record equipment unit record equipment unit record equipment unit record equipment unit record machines unit record equipment unit-record equipment English unit record equipment unit record machines unit record equipment unit record machines unit record equipment Unit Record equipment Unit Record Unit record equipment unit record equipment unit record equipment unit record equipment Punch card computing unit record equipment Punch card computing Hollerith machines Punch card computing unit-record processing card reading and punching unit record equipment Unit record equipment unit record equipment unit record equipment unit-record processing