Function of the card:
CTRL Integrator Diode Input - Neg
Listed in 1401 SMS card usage
Part number: 371666
Used in: IBM 729V
Image courtesy of Henk Stegeman
Image courtesy of Roberto Gonzalez Rocha
The information on these pages comes from a variety of sources, especially old IBM documents on bitsavers.org, as well as information from the IBM 1401 restoration team, especially Tim Coslet's SMS data and Jim Hunt's data. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.