Large capacity magnetic film stores¿a design approach

The organization of large capacity magnetic film stores is considered. It is shown that the best compromise is obtained when all the strip transmission lines are extended in length until the limit imposed by attenuation and delay is reached. The number of continuous sections of both word and digit lines, and hence the number of auxiliary electronic circuits required for a store of given capacity and speed, is expressed in a novel manner as a function of the cross-sectional dimensions of strip lines. This expression is optimized to give the optimum store organization. The demands made on constructional techniques and electronic circuit elements by such a store are considered and the limits within which magnetic film stores are likely to be economical are suggested.