Technology pervades our daily lives and modern society, and not just when it comes to computers and smart phones. Before there was the computer, there was the abacus. Before the smart phone, there was the telegraph and ball point pen. Electricity, penicillin and the compass have all led to revolutionary changes in how we live. The Handy Technology Answer Book explains how technology has revolutionised the way people live, work and play. It covers a broad range fields, including medicine, mining, buildings and transportation.