Presentation given at the event titled “The bumpy road from maps to the digital Earth – Hungarian GIS from the beginning to the present”, organized by the John von Neumann Computer Science Society's Forum on the History of Information Technology (NJSZT iTF), the Hungarian Society for Geographic Information Technology (HUNAGI) and the Faculty of Civil Engineering of the Budapest University of Technology and Economics (BME), as part of the “Big Computing Workshops” series, at the Faculty of Civil Engineering of the BME. (2022.06.24.)