The interpreter 30 may be digital logic circuitry that compares the states of the signals GH and GL or may be a microprocessor that employs {TAIL ~ software routines} to accomplish {HEAD ~ the same purpose} 
The interpreter 30 may be digital logic circuitry that compares the states of the signals GH and GL or may be a microprocessor that employs { TAIL ~ software routines } to accomplish { HEAD ~ the same purpose }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD