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

Function of the card:
DDTL-2-4 Way AIP No Load, 1-Inverter 390 Ohm Load
Ddtl-2-4 way aip no load,1-inverter 390 ohm load

Part number: 372127

Used in: IBM 1410, 7040

Cap code: None (details)

References: 1410_SMS_VOL_2.pdf, p141
National Museum of Computing.

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.