I was teaching in classes for highly qualified technicians in industrial computer technology in the late 80s and early 90s both in the audio-visual field and in the networking field. Apple was there for sure but in most business, including audio-visual though the first virtual editing workbench was McIntosh, the real revolution in common and current use of computing technology was PC, personal Computer, with IBM still in the field at the time and already moving towards what it is today after selling their PC department to the Chinese. I followed the change with my students in railroad companies, mail ordering companies, TV companies, radio stations, etc. One of my students ended up responsible for the digitization of program management and broadcasting in one essential private TV company in Europe and they were not working with Macintosh but with PCs hence with windows essentially, and that was in the early 1990s. Your presentation does NOT specify that majority side of the picture. And I am sorry about it. If you consider your article as not worth going to classes like the one I have worked or am working with, it is a bad sign about what this article is. You should aim at being a didactic resource and not. . .