Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

A multichip superconducting microcomputer ETL-JC1

Conference · · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)
OSTI ID:5690485
; ; ; ; ; ;  [1]
  1. Electrotechnical Lab., Ibaraki (Japan)
+ Show Author Affiliations

This paper describes a multichip 4-bit superconducting microcomputer named ETL-JC1 designed based on Josephson LSI technology developed in the Electrotechnical Laboratory in order to demonstrate the feasibility of a Josephson computer system. The ETL-JC1 is the first Josephson computer which can execute the computer program stored in the ROM chip. In order to make the ETL-JC1 the following key technologies have been developed: Nb tunnel junction integration process, LSI logic circuit, memory chips of 1- kbit ROM (read-only memory) and 1-kbit RAM (random access memory), CAD (computer aided design) system to develop Josephson LSIs, and multi-phase power supply system. The computer consists of four Josephson LSI chips essential to execute the computer function of arithmetic-logic, sequence control, program memory and data memory. The whole computer system was designed based on a RISC (reduced instruction set computer) architecture.

OSTI ID:
5690485
Report Number(s):
CONF-900944--
Journal Information:
IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Vol. 27:2; ISSN IEMGA; ISSN 0018-9464
Country of Publication:
United States
Language:
English

Similar Records

Fabrication process for a Josephson computer ETL-JC1 using Nb tunnel junctions
Conference · Thu Feb 28 23:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) · OSTI ID:5921296
A 1-GHz-clock Josephson microcomputer system
Conference · Thu Feb 28 23:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) · OSTI ID:5901210
Toyota's new single-chip microcomputer based engine and transmission control system
Book · Mon Dec 31 23:00:00 EST 1984 · OSTI ID:5344158

Related Subjects

24 POWER TRANSMISSION AND DISTRIBUTION
240100 -- Power Systems-- (1990-)
665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COMPUTER CODES
COMPUTER-AIDED DESIGN
COMPUTERS
DESIGN
ELECTRONIC CIRCUITS
ELEMENTS
FEASIBILITY STUDIES
JOSEPHSON JUNCTIONS
JUNCTIONS
LOGIC CIRCUITS
MEMORY MANAGEMENT
METALS
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
NIOBIUM
OPERATION
OXIDES
OXYGEN COMPOUNDS
PLANNING
POWER TRANSMISSION
SUPERCONDUCTING JUNCTIONS
TRANSITION ELEMENTS