{HEAD ~ An adder device} adds {TAIL ~ the signals} of the scaled input and digital arrays at corresponding array positions to form the output analog array 
adds
{ HEAD ~ An adder device } adds { TAIL ~ the signals } of the scaled input and digital arrays at corresponding array positions to form the output analog array
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH