A printer, controlled by the microprocessor, presents a permanent record of the battery analysis, while a display unit, under program control, directs {HEAD ~ an operator} in {TAIL ~ the use} of the analyzer 
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A printer , controlled by the microprocessor , presents a permanent record of the battery analysis , while a display unit , under program control , directs { HEAD ~ an operator } in { TAIL ~ the use } of the analyzer
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH