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

Function of the card:
CTDL-Power Inverter “P” Type
CTDL Power Inverter NPN
Ctdl power inverter type
CTDL Power Inverter "P" Type

Complemented Transistor Diode Logic (CTDL) is IBM's term for a form of diode-transistor logic.

Part number:371676

Field replacement part number:371676

Customer Eng reference number:729889

Used in:IBM 1401,IBM 1410

Symbol:IP

IP: Inverter, Power. Performs function of an inverter white also driving a line.
NU NU

References:
IBM Standard Modular System, Component Circuits, p233.
2_2 SMS Cards, p50.
1410_SMS_VOL_1.pdf/1410_SMS_VOL_2.pdf, p2107.
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.