From simple abacuses to today's supercomputers, trace the evolution of technology's developments in all things digital and computer-related. A host of famous (and not so famous) computing machines throughout history, from early steam-powered computing machines and code breaking machines used during World War II to the development of the world wide web, wireless technology, show how inventors and engineers have developed and improved on technology to make computers such an important part of human history. This book also dissects some of the major developments in each era, to give a rounded picture of these amazing machines. Technology Timelines is a series of six book aimed at upper KS2 and early KS3 readers, tracing the development of specific technologies through the ages.