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

Function of the card:
Peak detector, integrator & v.m. driver
Peak Detector, Integrator & V.M. Driver

Listed in 1401 SMS card usage

Part number: 370421

PCB number: 484099

Used in: IBM 1401, IBM 1410

IBM SMS card type YCC 370421 IBM SMS card type YCC 370421

References: 1410_SMS_VOL_1.pdf, p119
Coslet data
2_2 SMS Cards, p140
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, 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.