Humanity's hunt for calculating devices probably started with the
use of small pebbles to keep track of numbers. The counting
inventions progressed through the abacus, early mechanical
calculators, and other ingenious devices culminating in today's
computers. In this new book, Thomas Russo chronicles 600 years of
caculating devices, providing valuable information for historians
and collectors alike. Stretching from ancient times to the earliest
computers, this book provides an insight into breadth and depth of
human creativity and drive. With 500 color photographs, descriptive
captions, and a guide to current values, this is an essential guide
in a field that is finding ever more enthusiasts.
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