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

Function of the card:
Ctrl pnp exclusive or
CTRL PNP Exclusive "OR"

Triple 2 Input XNOR

Complemented Transistor Resistor Logic (CTRL) is IBM's term for a form of resistor-transistor logic.

Part number: 370386

Used in: IBM 1620

Cap code: None (details)

Symbol: V

Pinout:

A O3C
B O3R
C O1
D I3
E I2
F
G
H O2C
J GND
K I2
L I3
M -12V
N +12VM
P I1
Q I1
R O2R
References: IBM 1620 Instructional System Diagrams, p474
Coslet data

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.