Title Description:
The history of communication dates back to the earliest signs of life. Comm...The history of communication dates back to the earliest signs of life. Communication can range from very subtle processes of exchange, to full-blown conversations and, especially in our current time, mass communication. Human communication was revolutionised by speech about 200,000 years ago. Symbols were developed about 30,000 years ago, and writing about 7,000 years ago. On a much shorter scale, there have been major developments in the field of telecommunications in the past few centuries. Most of these developments have revolved around the discovery of electricity. From postal services to telegrams to telephones, most of this revolution was powered by the analogue signal. There has been another revolution in recent years as digital communications have become widely used. In this title, we'll examine what makes these signals what they are and the impact they have on us.
Reviews
There are currently no reviews of this product.
You need to be logged in to review this title!
