Kodak and several of the major camera manufacturers were involved in developing digital xcameras. The came on the market in the late 1980s./early 1990s.
Originally, it was thought that Marconi made it, but he originally stole it from Tesla (who really made it) and Tesla sued him. The radio was invented ~1880's.
I am actually doing a summer assignment on world history now, and one of the chapters was on ancient classical Indian civilization. Hinduism had no creator, unlike every other religion in the world....