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

Function of the card:
SDTRL - 1.33 mc crystal oscillator

Saturated Drift Transistor Resistor Logic (SDTRL) is a form of resistor-transistor logic using faster drift-field transistors.

Part number:370259

PCB number:493345

Used in:IBM 1410

References:
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p1072.
This page created by Ken Shirriff, 2015.

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. Images courtesy of Randall Neff. Much of this information was obtained through OCR, so don't expect complete accuracy. These pages are not associated with IBM in any way.

Creation time: Tue Mar 03 23:40:34 2015.