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

Function of the card:
Oscillator – Free Running 20 KC

Part number: 371458

Used in: IBM 7090

Cap code: None (details)

Symbol: OSC

OSC: Oscillator. A free-running non-stable muitivibrator used to provide pulses of a given frequency and amplitude.

References: Drawing courtesy of Living Computers: Museum + Lab

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.