Function of the card:
SDTL-SDTRL-1440KC Crystal Oscillator
SDTDL-sdtrl-144okc crystal oscillator
Part number: 372179
Used in: IBM 1410
National Museum of Computing.
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.