Additionally, {TAIL ~ the preferred signal detection} and logic includes an operational amplifier connected to the output of the light sensor and an analog to digital converter connected to {HEAD ~ the output} of the operational amplifier 
Additionally , { TAIL ~ the preferred signal detection } and logic includes an operational amplifier connected to the output of the light sensor and an analog to digital converter connected to { HEAD ~ the output } of the operational amplifier
OTH OTH TAIL 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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH