This page describes the IBM SMS card "DYD", and is part of the SMS card database.

Part number: 372350

PCB number: 484849

Cap code: None (details)

IBM SMS card type DYD 372350 IBM SMS card type DYD 372350 IBM SMS card type DYD 372350

Image courtesy of Arthur Dauzat

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.