Function of the card:
SDTDL three 3-way n and logic blocks with loads
SDTDL - three 3-way n and logic blocks with loads
Part number: 370218
PCB number: 399587
IBM 1311 ILD, p113
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.