{HEAD ~ A controller} may send signals to {TAIL ~ one or more driver circuits} for directing operation of the actuators 
{ HEAD ~ A controller } may send signals to { TAIL ~ one or more driver circuits } for directing operation of the actuators
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH