{TAIL ~ The encoding circuit} converts the binary signals supplied from the first and second comparator groups to digital data of a binary code corresponding to the product of the first and second analogue signals to output {HEAD ~ the digital data} 
{ TAIL ~ The encoding circuit } converts the binary signals supplied from the first and second comparator groups to digital data of a binary code corresponding to the product of the first and second analogue signals to output { HEAD ~ the digital data }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD