Years ago heard some airports used to use Powerpoint and DDE for flight info displays. Data was coming from ?? probably a mainframe. Haven't looked into it even

Years ago heard some airports used to use Powerpoint and DDE for flight info displays. Data was coming from ?? probably a mainframe. Haven't looked into it even though I have a use case similar to what fast-food outfits use to coordinate order assembly. Imagine it's not real-time. Might be reasonably fast.