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

Function of the card:
Sense Smplifier
Sense amplifier

Part number: 372229

Customer Eng reference number: 734401

Used in: IBM 1443 Printer, IBM 2821 Control Unit

Cap code: None (details)

IBM SMS card type YLA 372229 IBM SMS card type YLA 372229 IBM SMS card type YLA 372229 IBM SMS card type YLA 372229 IBM SMS card type YLA 372229 IBM SMS card type YLA 372229

Image courtesy of Randall Neff

References: IBM 2821 CCD, p102
National Museum of Computing.
IBM 1443 ALD, p127

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.