The Map Technology of Storage Contents in accordance with even and odd symmetry, the Curve Fitting Technology based on address contents and the Division Difference Technology based on storage contents were used to solve the problem that storage resources is heavily demanded in high precision and high resolution NCO storage. The performance of the Map Technology of storage contents in accordance with even and odd symmetry, and the Curve Fitting Technology based address contents were derived by the mathematical model of content and address. The Division Difference Technology based on storage contents was analyzed qualitatively and simulated with an instance. All the three methods can efficiently reduce resources，which can be reduced to less than three percent by the simultaneous use of two or three efficient technologies.
