The number of {TAIL ~ contacts} required to independently control the N components is substantially less than the total number of {HEAD ~ terminals} 
The number of { TAIL ~ contacts } required to independently control the N components is substantially less than the total number of { HEAD ~ terminals }
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD