Function of the card:
Current Mode, Minus N Line Indicator
Part number: 371049
Used in: 7030, IBM 7090
Symbol:DI
DI: Driver, Indicator. Driver operating into an indicating device.
Image courtesy of Computer History Museum
This page created by Ken Shirriff on Wed Sep 15 18:15:09 2021.
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.