At the non inverting input of operational amplifier Ao, {TAIL ~ Voffset} indicates {HEAD ~ an inevitable small but nonzero offset voltage} 
At the non inverting input of operational amplifier Ao , { TAIL ~ Voffset } indicates { HEAD ~ an inevitable small but nonzero offset voltage }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD