I couldn't find details on the Perceptron's motors, but I expect they were DC motors, rotating the potentiometers higher or lower as needed. The synchro is usef

I couldn't find details on the Perceptron's motors, but I expect they were DC motors, rotating the potentiometers higher or lower as needed. The synchro is useful if you have a rotation in one location and one to match the rotation at another location. But with the Perceptron, you don't have a specific rotational angle you want, just "more" or "less".