a third memory for storing the control information from {TAIL ~ the remote control system} for controlling {HEAD ~ the multiplexers selection} 
a third memory for storing the control information from { TAIL ~ the remote control system } for controlling { HEAD ~ the multiplexers selection }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD