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

Function of the card:
Sense Amplifier-Input Filter and Select Gate
Sense amplifier - input filter and select gate

Listed in 1401 SMS card usage

Part number: 370417

PCB number: 484143

Used in: IBM 1410, IBM 1401

Cap code: None (details)

IBM SMS card type YBY 370417 IBM SMS card type YBY 370417

References: 1410_SMS_VOL_1.pdf, p116
2_2 SMS Cards, p137
Coslet data

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.