This document provides an electronic media timeline, highlighting several important dates in the development of major communication technologies: 1877 - Invention of the phonograph; 1920 - Commercial radio begins in the US; 1928 - Invention of television by Philo Farnsworth; 1969 - Creation of the ARPANET which laid the foundations for the internet; 1991 - Invention of the World Wide Web by Tim Berners-Lee. It also notes the development of video games, mobile phones, smartphones, and social media sites from the 1970s through the 2000s.