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. The Science of Computers investigates how information technology and digital devices have developed from the early machines the size of basketball courts, 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. These try at home examples 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.