340 / | HD | COMMUNICATIONS: ELECTRICAL |
825 | DF | SELECTIVE {23} |
825.79 | DF | .~ Matrix {4} |
825.85 | .~.~ Semiconductor crosspoint {6} | |
825.86 | DF | .~.~.~> Integrated circuit |
825.87 | DF | .~.~.~> Logic |
825.88 | DF | .~.~.~> Bistable |
825.89 | DF | .~.~.~> Switching element |
825.9 | DF | .~.~.~> Transistor {3} |
825.94 | DF | .~.~.~> Diodes {2} |