{HEAD ~ A method} and an apparatus for storing data provide data memory in a systematic, cyclical arrangement, provide plural data portals in an arrangement defined by modular arithmetic, and provide sequential, relative movement between the data memory and {TAIL ~ the data} portals 
{ HEAD ~ A method } and an apparatus for storing data provide data memory in a systematic , cyclical arrangement , provide plural data portals in an arrangement defined by modular arithmetic , and provide sequential , relative movement between the data memory and { TAIL ~ the data } portals
HEAD HEAD HEAD HEAD HEAD HEAD 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH