Textbook in PDF format

DK Eyewitness Computer is a brand new topic for this bestselling reference series, covering one of technologies major inventions. Amazing photographs offer a unique "eyewitness" view to the history and science behind the technology that defines our digital world.
From ancient to modern times, show your child how an ancient Greek computer was used to predict the movement of the stars and how mid-20th century computers were the size of a large room. They'll also discover how computers are used in modern inventions such as mobile phones, iPads, and artificial intelligence in the 21st-century