Systematic design of cryogenic logic circuits

In recent years considerable interest has been manifested in the fields of information storage and retrieval and pattern recognition. An important element in the design of information-retrieval systems and pattern recognition devices is associative memory 5, 10--13, 15. An associative memory is particularly suitable for search of a record from a large file, the sorting of data into an ordered list 9, 10, 12 and the identification of patterns. Cryotron circuits are important components in the construction of an associative memory system. Despite this importance and though cryotron technology has been actively developed for some years, it is still in its infancy.