The realization of symmetric switching functions using magnetic bubble technology

Abstract

Since its debut in the late sixties, magnetic bubble technology has quickly evolved to become a promising alternative to semiconductor technology for computer construction. While emphasis has been placed upon the application of bubble technology to storage, its application to logic has thus far been largely limited to the implementation of simple basic operators, such as AND, OR, etc. An exception is the excellent work recently reported in References 12 and 13. This limitation to simple basic operators, however, is not in keeping with the high density and low connectivity requirements of LSI (Large-Scale Integration), and it has become increasingly important to find powerful multi-input switching functions. The symmetric function is a natural candidate. The realization of symmetric functions using magnetic bubble technology has been found to be very simple.