In this embodiment the memory control means includes a lock having a counter for registering the number of control pulses received, and gating means connected to control application of {HEAD ~ clock signals} to {TAIL ~ the shift register} 
to
In this embodiment the memory control means includes a lock having a counter for registering the number of control pulses received , and gating means connected to control application of { HEAD ~ clock signals } to { TAIL ~ the shift register }
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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL