cards per line if required and print these cards on an IBM 407 accounting machine and then throw the cards away. 1968: International Computers and Tabulators (ICT) is merged with English Electric Computers, forming International Computers Limited (ICL). 1969: The IBM System/3, renting for less than $1,000 a month, the ancestor of IBM's midrange computer product line, aka. minicomputers, was aimed at new customers and organizations that still used IBM 1400 series computers or unit record equipment. It featured a new, smaller, punched card with a 96 column format. Instead of the rectangular punches in the classic IBM card, the new cards had tiny (1 mm), circular holes much like paper tape. By July 1974 more than 25,000 System/3s had been installed. 1971: The IBM 129 Card Data Recorder (keypunch and auxiliary on-line card reader/punch) is the last, or among the last, 80-column card unit record product announcements (other than card readers and card punches attached to computers). 1975 Cardamation founded, a U.S. company that supplied punched card equipment and supplies until 2011. Endings 1976: The IBM 407 Accounting Machine was withdrawn from marketing. 1978: IBM's Rochester plant made its last shipment of the IBM 082, 084, 085, 087, 514, and 548 machines. The System/3 was succeeded by the System/38. 1980: The last reconditioning of an IBM 519 Document Originating Punch. 1984: The IBM 029 Card Punch, announced in 1964, was withdrawn from marketing. IBM closed its last punch card manufacturing plant. 2010: A group from the Computer History Museum reported that an IBM 402 Accounting Machine and related punched card equipment was still in operation at a filter manufacturing company in Conroe, Texas. The punched card system was still in use as of 2013. 2011: The owner of Cardamation, Robert G. Swartz, dies, and the company, perhaps the last supplier of punch card equipment, ceases operation. 2015: Punched cards for time clocks and some other applications were still available; one supplier was the California Tab Card Company. As of 2018, the web site was no longer in service. Punched cards The basic unit of data storage was the punched card. The IBM 80-column card was introduced in 1928. The Remington Rand Card with 45 columns in each of two tiers, thus 90 columns, in 1930. Powers-Samas punched cards include one with 130 columns. Columns on different punch cards vary from 5 to 12 punch positions. The method used to