IBM 1440 Data Processing System Features Five New Units The IBM 1440 data processing system, announced recently by the International Business Machines Corporation, not only features the 1311 disk storage drive with interchangeable disk packs but four other newly developed units. CACM December, 1961 Wheeling, R. CA621225 JB March 17,1978 4:30 PM 414 5 414 414 5 414 414 5 414