As more IC devices are fabricated on {TAIL ~ a single chip} or {HEAD ~ die}, it is desirable to preserve the surface area 
As more IC devices are fabricated on { TAIL ~ a single chip } or { HEAD ~ die } , it is desirable to preserve the surface area
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH