This is one of a series of forty-column perforated punch cards designed for use with the programmable Wang LOCI-2 electronic calculator. Each card is marked in the bottom left corner: IBM D56709. Each card is marked on the left side: LOCI (LOGARITHMIC COMPUTER) PROGRAM.
For the calculator, see 1980.0096.01. For the card reader, see 1980.0096.01.1. For the card punch, see1980.0096.02.