Did they call it that? There were IDEs of sort long before Delphi (staying with the Pascal family, even pre-Delphi Turbo Pascal sort of fits - letting you compile and run straight from the editor well back into the 80s), but most were not called an IDE.
vidarh|4 years ago
pjmlp|4 years ago
https://en.m.wikipedia.org/wiki/Xerox_Development_Environmen...
You just need to dive into the Xerox Development Environment papers and documentation for the Alto (1977).