Function of the card:
CTDL NPN Two Way Gate w/ Collector Load
Ctdl npn two way gate w/ coll load
Complemented Transistor Diode Logic (CTDL) is IBM's term for a form of diode-transistor logic.
Part number:370144
Field replacement part number:370144
PCB number:493339
2_2 SMS Cards, p63.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p1016.
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 23:40:32 2015.