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{{Short description|PL-11 Programming}}
{{for multi|the New Zealand aircraft|Bennett Airtruck|the Chinese missile|PL-11 (missile)}}

'''PL-11''' is a high-level machine-oriented [[programming language]] for the [[PDP-11]], developed by [[R.D. Russell]]<!-- not [[Robert D. Russell]] --> of [[CERN]] in 1971. Written in [[Fortran IV]], it is similar to [[PL360]] and is cross-compiled on other machines.<ref name="foldoc">{{foldoc|PL-11}}</ref>

PL-11 was originally developed as part of the Omega project, a particle physics facility operational at CERN (Geneva, Switzerland) during the 1970s. The first version was written for the [[CII 10070]], a clone of the XDS Sigma 7 built in France. Towards the end of the 1970s it was ported to the IBM 370/168, then part of CERN's computer centre. In 1974, it was ported to the Burroughs B6700 at Massey University in New Zealand. <ref>{{cite report|author=Carpenter, Brian E.|publisher=[[Massey University]] Computer Unit|year=1974|title=A PL-11 Package on the Burroughs B6700|url=https://natlib.govt.nz/records/21899158|accessdate=2025-03-12}}</ref>

A report describing the language is available from CERN.<ref>{{cite report|author=Russell, Robert D.|editor=T. C. Streater|publisher=[[CERN]]|year=1974|title=PL-11: A Programming Language for the DEC PDP-11 Computer|url=https://cds.cern.ch/record/880468/files/CERN-74-24.pdf|accessdate=2014-05-02}}</ref>

==References==
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[[Category:Procedural programming languages]]
[[Category:Programming languages created in 1971]]
[[Category:CERN software]]