Discusses the methods of computation developed in various civilizations around the world, from prehistoric times up until the end of the Roman Empire.

Describes the mathematical technology used by ancient societies, covering techniques used for counting, measurements, weights, time, and calculations, including

Did you know . . . • Ancient cultures measured time accurately with water clocks? • An engineer in the first century B.C. designed an odometer to calculate

A strikingly illustrated overview of the computing machines that have changed our world—from the abacus to the smartphone—and the people who made them, by t

Every civilization throughout history needed one thing to trade, build, and farm: math. Explore the many unique computing systems created by ancient civilizatio