Josephson address control unit IC for a 4-bit microcomputer prototype

Conference · Wed Mar 01 04:00:00 EST 1989 · IEEE Trans. Magn.; (United States)

OSTI ID:6042907

Kosaka, S; Nakagawa, H; Kawamura, H; Okada, Y; Hamazaki, Y; Aoyagi, M; Kurosawa, I; Shoji, A; Takada, S

This paper describes a design and operations of a Josephson address control unit IC (CTRU) used for controlling the instruction sequence of an experimental 4-bit Josephson microcomputer prototype system. The CTRU is composed of three sets of 7 to 10-bit wide registers and combinational logic circuits driven by a two-phase mono-polar power supply. 593 4-Junction-Logic (4JL) gates have been used in the circuit and fabricated by using 2.5um NbN/oxide/NbN junction technology with Mo resistors and SiO/sub 2/ insulations. Experimental operations of the circuit have been successfully tested for all the instructions which control the program sequence of the computer system.

• Research Organization: Electrotechnical Lab., 1-1-4, Umezono, Tsukuba-shi, Ibaraki (JP)
• OSTI ID: 6042907
• Report Number(s): CONF-880812-
• Conference Information: Journal Name: IEEE Trans. Magn.; (United States) Journal Volume: 25:2
• Country of Publication: United States
• Language: English

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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
COMPUTER CODES
COMPUTERIZED SIMULATION
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ELECTRIC CONDUCTIVITY
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INTEGRATED CIRCUITS
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