Function of the card:
CTDL PNP Two Way Gate With Collector Load
Ctdl pnp two way gate with coll load
Complemented Transistor Diode Logic (CTDL) is IBM's term for a form of diode-transistor logic.
Part number:370142
Field replacement part number:370142
PCB number:493335
2_2 SMS Cards, p65.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p1014.
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.