DIRECT COUPLED ADDER BY USING JOSEPHSON ELEMENTS

So far developed Josephson logic adder using Josephson tunneling logic(JTL) has been constructed by undirect coupled technique for the carry signal propagation. Therefore, the system of adder becomes complex and operation becomes slow. The direct-coupled adder described below overcomes these shortcomings so as to achieve a high speed operation with a very simple construction. Furthermore, a novel direct-coupled CIL adder is included with necessary features and detail.