The Science of Computers takes an overall look at information technology, exploring how computers operate and the amazing devices that are used in homes, schools, and businesses today. Students will be fascinated by the history of the development of information technology and digital devices from the early computers that filled entire buildings to the tiny silicon chips being produced today. This practical learning guide lays the groundwork for further exploration of computational thinking. "Stretch Yourself" features give practical activities to help readers explore and test key principles to help reinforce learning and are not linked to specific software or operating systems. "True Story" features give real-world anecdotes from the world of information technology. "Computer Hero" features look at the groundbreaking scientists that paved the way for digital technology today.