The communication revolutions there are three part, The first is Phonetic Writing early attempts at written communication began modestly with “Pictographs” it’s is a symbol, For example when you write a heart that mean love. The second is Printing began in Germany in 1455 when Johannes Gutenberg printed a Bible on a press that used moveable type. The third is Computer Technology. Nowadays we use computer technology in many way because it convenient for us. For example, computer, mobile phone. Since 3500 B.C to today has many changes and develop for convenient of us. (from pages 4,16-17)