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

Function of the card:
Memory array
Buffer memory card

Part number: 373330

Customer Eng reference number: 734416

PCB number: 395643 , hole pattern: 490252

Used in: IBM 1443 Printer, IBM 2821 Control Unit

IBM SMS card type DJB 373330 IBM SMS card type DJB 373330 IBM SMS card type DJB 373330 IBM SMS card type DJB 373330

Image courtesy of maisorbus
Image courtesy of Henk Stegeman

References: IBM 1443 ALD, p110
IBM 2821 CCD, p67
This page created by Ken Shirriff on Sun Dec 16 16:11:05 2018.

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.