It is not surprising that the interactivity affects radio and its applications. Besides, after radio began its first broadcasting, new inventions affected its development two ways: 1) the first one was the technological developments of sciences. For instance, the invention of transistors made it possible to create very small radio machines, and…

This booklet is intended as a reference on the application of the technology of communication systems to distance education. An introductory section addresses the nature of the interaction imposed by use of various technologies. The next section overviews current telecommunications applications based on these major technologies: radio, television…