PLEX (programming language): Difference between revisions

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[[File:Mobile Switching Centre-Ericsson AXE.jpg|thumb|Ericsson AXE]]

'''PLEX''' (Programming Language for EXchanges) is a special-purpose, concurrent, real-time [[programming language]]. The PLEX language is closely tied to the architecture of Ericsson's [[AXE telephone exchange]]s which it was designed to control. PLEX was developed by Göran Hemdahl at [[Ericsson]] in the 1970s,<ref name=ErlangHistory>{{cite web |url= http://www.cs.chalmers.se/Cs/Grundutb/Kurser/ppxt/HT2007/general/languages/armstrong-erlang_history.pdf|title= A History of Erlang|accessdate=2009-03-07 |author= Joe Armstrong|date= |work= |publisher=Ericsson AB}}</ref> and it has been continuously evolving since then.<ref name=Semantics>{{cite web |url= http://cdc.ioc.ee/appsem04/webproc/short/erikson-lisper.pdf|title= A Formal Semantics for PLEX|accessdate=2009-03-07 |author= Johan Erikson and Björn Lisper|date= |work= |publisher=Mälardalen University}}</ref> PLEX was described in 2008 as "a cross between [[Fortran]] and a [[Assembly_language#Macros|macro assembler]]."<ref>{{cite web|last1=Hague|first1=James|title=My Road to Erlang|url=http://prog21.dadgum.com/22.html|website=Programming in the 21st Century}}</ref>