This document summarizes the evolution of communication technologies through the decades from 1900 to the present. It highlights major innovations in each decade such as the telegraph in 1900, radio in 1904, color TV in 1953, the first Windows operating system in 1983, and the iPhone in 2007. The document also discusses pros and cons of using technology in education and business communication. It concludes by reflecting on questions about the impact of technology on communication and considers potential future technologies like internet TV and voice over internet.