The exposed top face of the IC chip has a plurality of contact areas or pads around the periphery of the chip for connecting the input/output leads of {HEAD ~ the various circuits} within the IC chip to {TAIL ~ the multilayer circuit board} 
The exposed top face of the IC chip has a plurality of contact areas or pads around the periphery of the chip for connecting the input / output leads of { HEAD ~ the various circuits } within the IC chip to { TAIL ~ the multilayer circuit board }
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 OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL