Modern media began over 30,000 years ago with cave paintings and has since evolved to include the development of the alphabet, printed books, newspapers, audio recordings, photographs, movies, television, computers, video players, digital cameras, and personal media players. Key developments include the first printed book in China in 6 CE, Johannes Gutenberg inventing the printing press in 1455, Thomas Edison patenting the phonograph in 1877, the first movie theater opening in 1896, and the introduction of personal computers in the late 1970s and early 1980s which have now become integral to daily life.