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

Function of the card:
Reference to -6 Volts

Part number: 370613

Cap code: None (details)

IBM SMS card type YGM 370613 IBM SMS card type YGM 370613

Image courtesy of Göran Axelsson

References: Coslet data
1_2 SMS Cards, pp23,24

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.