Nicknames like the "Mother of Modern Naval Computing" and "Grandma COBOL" described the impact mathematical genius Grace Hopper had on the computer's development. In 1942, the first electronic computer filled an entire room. One simple calculation took hours to finish. As the first woman to program the United States' first computer, Hopper earned herself another nickname, "Amazing Grace." With fascinating details and period photographs, this fascinating biography covers the life and many achievements of a woman scientist without whom the development of modern computers would be impossible.