327 / | HD | MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS |
100 | DF | SIGNAL CONVERTING, SHAPING, OR GENERATING {29} |
291 | DF | .~ Clock or pulse waveform generating {11} |
293 | .~.~ With plural paths in network {1} | |
294 | DF | .~.~.~> With common output |