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

Function of the card:
SDTDL-2 Way Logic Block Low Speed with Loads
4-2 way-load
SDTDL 2 way logic blck low sp w lds
SDTDL-2 way logic block low speed with loads
SDTDL - 2 Way Logic Block Low Speed With Loads

Listed in 1401 SMS card usage
Exists in SLT version.

Saturated Drift Transistor Diode Logic (SDTDL) is a form of Diode-transistor logic using faster drift-field transistors.

Part number: 370380

SLT modules: 2399110

Customer Eng reference number: 729913

PCB number: 484027

Used in: IBM 1410, IBM 1401, IBM 1443 Printer, IBM 2821 Control Unit, IBM 1311 Disk

IBM SMS card type DGT 370380 IBM SMS card type DGT 370380 IBM SMS card type DGT 370380 IBM SMS card type DGT 370380 IBM SMS card type DGT 370380 IBM SMS card type DGT 370380

References: IBM 1311 ILD, p121
Coslet data
2_2 SMS Cards, p83
IBM 2821 CCD, p50
IBM 1443 ALD, p94
1410_SMS_VOL_1.pdf, p104
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.