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Language peer sets for OPS-4:
United States↑
United States/1967↑
Designed 1967 ↑
1960s languages ↑
Third generation↑
High Cold War↑
Genus Event scheduling ↑
Event scheduling↑
Discrete↑
Simulating ↑
Event scheduling/1967↑
Discrete/1967↑
Simulating/1967↑
Event scheduling/United States↑
Discrete/United States↑
Simulating/United States↑

OPS-4(ID:4613/ops007)

On-line Process Synthesizer version 4 

alternate simple view
Country: United States
Designed 1967
Genus: Event scheduling

Modification by Malcom Jones of OPS-3 to ensure greater functionality: running under MULTICS on GE 645, implemented in PL/I and featuring data types - sets, queues tables.

Conceptual switch from Events (SIMSCRIPT) to Activity (SOL and SIMULA)

Places
Structures:
Related languages
OPS-3 → OPS-4   Evolution of
OPS-4 → SIMPL   Evolution of
References:
  • Jones, Malcolm M. (1967) Jones, Malcolm M. "On—line simulation"
          in [ACM] (1967) Proceedings of the 22nd national ACM conference 1967, Washington, D.C.
  • Jones, M.M. (1968) Jones, M.M. "Incremental Simulation On A Time-Shared Computer" Massachusetts Institute of Technology, Project MAC report no. MAC-TR-48 January 1968 Abstract
          in [ACM] (1967) Proceedings of the 22nd national ACM conference 1967, Washington, D.C.
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