Typography is the art and technique of arranging type. It originated from the punches and dies used to make seals and currency in ancient times. In the 20th century, computer technology revolutionized typography. There are principles of typography like legibility, readability, and optimal spacing to make the text easy to navigate. Display typography takes a more artistic approach through unconventional styles and uses of color to convey emotion rather than focus on legibility. Typography is used in book covers, logos, packaging, posters, advertising, and motion pictures.