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

Function of the card:
Card asm tstr clk & with emit dr
Clock +And with Emitter Follower Driver

Listed in 1401 SMS card usage

Part number: 370342

Field replacement part number: 370342

Customer Eng reference number: 729857

Used in: IBM 1401

IBM SMS card type DGQ 370342 IBM SMS card type DGQ 370342

References: 2_2 SMS Cards, pp10,11
Coslet data
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.