Function of the card:
CTRL Light Driver N Type
Ctrl light driver n type
Hex Lamp Driver 15mA
Complemented Transistor Resistor Logic (CTRL) is IBM's term for a form of resistor-transistor logic.
Part number: 371943
PCB number: 493239
Used in: IBM 1311 Disk, IBM 1620, 1626, 7030, 1622
Cap code: None (details)
Symbol: LD, DI
Pinout:
 |
A I1 B O1 C I5 D E I2 F O2 G I6 H O6 J GND K O4 L O5 M N +12VM P I3 Q O3 R I4 |
National Museum of Computing.
IBM 1311 ILD, p92
1626 Plotter Parts
IBM 1620 Instructional System Diagrams, p471
Coslet data
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.