Brinch Hansen: the nucleus of a multiprogramming system

What changed

Described an extensible process-oriented nucleus separating basic process/communication functions.

Scientific scope

The record is Brinch Hansen's sole-author 1970 Communications of the ACM paper about the RC 4000 system. It does not absorb every contributor to RC 4000, Dijkstra's THE system, later microkernels or the general mechanism-policy literature.

Evidence

The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is Brinch Hansen's sole-author 1970 Communications of the ACM paper about the RC 4000 system. It does not absorb every contributor to RC 4000, Dijkstra's THE system, later microkernels or the general mechanism-policy literature.

Contributors

• Per Brinch Hansen · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.

• ACM DOI for multiprogramming-system nucleus
• University-hosted copy of the nucleus paper

Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.

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