The IBM 2560 multi-function card machine

The IBM 2560 Multi-Function Card Machine (MFCM) provides the System/360 Model 20 with a unique and versatile input/output capability. It combines the facilities of a card reader, card punch, collator, interpreter, and card document printer, all under control of the Model 20 processor. (See Fig. 1.) Two card hoppers, an optical read station that reads both primary and secondary cards, a common punch station, an optional printing station, and five selective radial stackers provide the Model 20 system with a card handling capacity never before possible with one pass of the cards.