Shot of tape input/output system. Man working at computer, reading a printout and installing a tape. Shot of tape containing customer data for a utility company (account no., names and addresses, previous and present readings, rate, accounts receivable, Arrears, Separated by Gas and Electric, Net and Gross Bills). Men in a room with computers. Narrator discusses families of computers, the 1400 family, the 7000 family and the new 7740 computer family. Shot of women and men working at desks and turning pages in large ledger books. Shot of women at tabulator inserting punch cards, shot of woman at terminal inputting data.