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Every digital experience ultimately depends on physical hardware. Behind faster applications, sharper displays and increasingly intelligent devices are continuing advances in processors, graphics, memory, storage, batteries, sensors and semiconductor design. This edition looks inside the machines that power modern technology and explains how improvements at the component level translate into better performance, efficiency and new capabilities across computers, smartphones, gaming devices, wearables and the expanding universe of connected electronics.

Personal technology has evolved from a collection of separate gadgets into an increasingly connected digital environment. Smartphones, laptops, watches, earbuds and other devices now share information, services and intelligence across a growing ecosystem. This edition examines how advances in processors, displays, batteries, sensors, software and artificial intelligence are changing the technology we carry every day, and how the interaction between hardware and software is becoming as important as the specifications of any individual device.