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

Function of the card:
Memory Emitter Resistors

Listed in 1401 SMS card usage

Part number: 370426

PCB number: 484159

Used in: IBM 1401

Cap code: None (details)

Symbol: R

R: Load. Provides proper terminating impedance or optimum coupling of one circuit to another at the correct operating voltage level.
IBM SMS card type AKC 370426 IBM SMS card type AKC 370426

References: 1_2 SMS Cards, p64
Coslet data

The information on these pages comes from a variety of sources, especially old IBM documents on, 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.