An intelligent write method allows each memory cell to either store {HEAD ~ an analog signal} or {TAIL ~ multiple digital signals} 
An intelligent write method allows each memory cell to either store { HEAD ~ an analog signal } or { TAIL ~ multiple digital signals }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL