Review - industrial revolutions

According to Warschauer (chapter 1) on page 12, three industrial revolutions have occurred.
1: 1700's, followed the invention of the steam engine. This is characterized by the replacement of hand tools by machines.
2: 1800's, followed humans ability to control electricity. By doing so, goods were produced on a large-scale production.
3: 1970's, the development of the transistor, personal computer and telecommunications. This lead to a information economy (NOT a Internet economy). In this information economy, computers and Internet play an essential role.