HTML version of Scripted Foils prepared 27 August 1996

Foil 85 Superconducting Technology -- Past

From CPS615-Introduction-Course,Driving Technology and HPCC Current Status and Futures CPS615 Basic Simulation Track for Computational Science -- Fall Semester 96. by Geoffrey C. Fox *
1 Superconductors produce wonderful "wires" which transmit picosecond (10^-12 seconds) pulses at near speed of light
  • Superconducting is lower power and faster than diffusive electron transmission in CMOS
  • At about 0.35micron chip feature size, CMOS transmission time changes from domination by transmission (Distance) issues to resistive (diffusive effects)
2 Niobium used in constructing such superconducting circuits can be processed by similar fabrication techniques to CMOS
3 Josephson Junctions allow picosecond performance switches
4 BUT IBM (!969-1983) and Japan (MITI 1981-90) terminated major efforts in this area
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