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Language peer sets for Protel:
Canada↑
Canada/1975↑
Designed 1975 ↑
1970s languages ↑
Fourth generation↑
High Cold War↑
Genus Pascals ↑
Multi-purpose ↑
Pascals↑
Wirth Algols↑
Generation of Algol 60 ↑
Pascals/1975↑
Wirth Algols/1975↑
Generation of Algol 60/1975↑
Pascals/Canada↑
Wirth Algols/Canada↑
Generation of Algol 60/Canada↑
Multi-purpose ↑
Multi-purpose/1975↑
Multi-purpose/ca ↑

Protel(ID:4094/)

Language with distributed modularity 

alternate simple view
Country: Canada
Designed 1975
Genus: Pascals
Sammet category: Multi-purpose

Developed by BNR for Nortel, and used to make switchboard and duplexing system.  One of the first languages to introduce true modularity (after Mesa)
Related languages
Mesa → Protel   Influence
Protel → BNR Pascal   Influence
References:
  • Cashin, Peter M. et al., (1981) Cashin, Peter M. et al., "Experience with a Modular Typed Language: Protel," Proceedings of the Fifth International Conference Software Engineering 1981, pp136-143
  • Kamel, Ragui F. and Gammage, Neil D. (1985) Kamel, Ragui F. and Gammage, Neil D. "Further Experience with Separate Compilation at BNR" IFIP Conf. System Implementation Languages: Experience and Assessment, North Holland' Amsterdam, 1985
  • Kamel, Ragui F. (1987) Kamel, Ragui F. "Effect of Modularity on System Evolution" IEEE Software Volume 4 Number 1 1987 Extract: Summary Extract: Interface additions Extract: Experience Extract: Modular languages Abstract
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