The Encyclopedia of Computers and Computer History provides a complete A-to-Z reference guide to computers, their development, and their usage in today's world. Beginning with Abacus, this two-volume set provides over 900 pages of facts, definitions, biographies, histories, and explanations of a remarkable variety of computer-related subjects. The Encyclopedia 's 600 entries--many of which represent the first reference treatment of their subjects--address the diverse topics that form the backbone of the information revolution. Entries include essays on major corporations, computing machines, software, networking, computing concepts, research, laboratories, and pioneering individuals in computing history. In addition to these essays, each entry is also followed by a helpful list of further reading on that subject. Contributors to the Encyclopedia represent a wide cross-section of accomplished scholars in the fields of computer science and scientific history. Their informative, accessible essays enable readers to learn about computer history in a non-intimidating way. An invaluable addition to any library collection, the Encyclopedia of Computers and Computer History is an indispensable resource for undergraduates, graduate students, and anybody with an interest in, or question about, computers.