This page describes the IBM SMS card "UDX", and is part of the SMS card database
Function of the card:
Part number: 372985
National Museum of Computing.
This page created by Ken Shirriff
on Wed Sep 15 18:15:11 2021.
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.