Issues In Josephson Supercomputer Design - Proceedings Of The 6th And 7th Riken Symposia On Josephson ElectronicsQuantum Flux Parametron(QFP) is a Josephson junction device which uses the polarities of a unit of quantum flux to represent a bit of binary information. The low power consumption and the inductive nature of signal transfer of QFP promise the realizability of a highly integrated Josephson Supercomputer. The miniaturization and the inductively connected circuits pose new challenges and problems to the designers of such a computer system. This volume