| 257 / | HD | ACTIVE SOLID-STATE DEVICES (E.G., TRANSISTORS, SOLID-STATE DIODES) |
| 213 | DF | FIELD EFFECT DEVICE {6} |
| 215 | DF | .~ Charge transfer device {11} |
| 225 | DF | .~.~ Non-electrical input responsive (e.g., light responsive imager, input programmed by size of storage sites for use as a read-only memory, etc.) {6} |
| 234 | ![]() | .~.~.~ Single strip of sensors (e.g., linear imager) |