In response to {TAIL ~ the start signal}, an accumulating device starts accumulating the counts respectively proportional to the data and develops {HEAD ~ an end} of count signal when the respective count is accumulated 
In response to { TAIL ~ the start signal } , an accumulating device starts accumulating the counts respectively proportional to the data and develops { HEAD ~ an end } of count signal when the respective count is accumulated
OTH OTH OTH TAIL TAIL 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 HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH