Unit Record Equipment - Tabulating

Tabulating

Reports and summary data were generated by accounting or tabulating machines, such as the IBM 407. A deck was fed through the tabulating machine where, as directed by the control panel, each card could be printed on its own line and/or selected fields from each card could be added to the value of one of several counters. At some signal, say a card with a special punch indicating it was a master card, one or more summary lines could be produced containing the summed values.