A counting circuit includes a digital counter for counting the pulses of an input signal during a counting interval and a pair of digital latches for latching {HEAD ~ the binary state} of {TAIL ~ the input signal} at the beginning and end of the counting interval, respectively 
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A counting circuit includes a digital counter for counting the pulses of an input signal during a counting interval and a pair of digital latches for latching { HEAD ~ the binary state } of { TAIL ~ the input signal } at the beginning and end of the counting interval , respectively
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH