Debugging a Program at Watson Laboratory

[ Index ] [ Prev ]

Eric Hankam modifying a plugboard program for an IBM Electronic Calculating Punch. IBM Watson Laboratory at Columbia University, 612 West 116th Street, New York City, some time between 1949 and 1959. Photo from the collection of Eric Hankam. Click on image to magnify to full size.

Frank da Cruz / / Columbia University Computing History