{TAIL ~ The timer}, comprising {HEAD ~ digital circuitry} is easily interfaced to a digital control computer 
{ TAIL ~ The timer } , comprising { HEAD ~ digital circuitry } is easily interfaced to a digital control computer
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH