PLEX (programming language)

The proprietary PLEX language is closely tied to the architecture of Ericsson's AXE telephone exchanges which it was designed to control.

PLEX was developed by Göran Hemdahl at Ericsson in the 1970s,[1] and it has been continuously evolving since then.

[4] Ericsson started a project in the mid-1980s to create a successor language, which resulted in Erlang.

According to co-creator Joe Armstrong, "Erlang was heavily influenced by PLEX and the AXE design.

A system is divided into separately compiled and loaded units of code called "blocks."