The Abacus: Number Systems and Calculators from Babylon to Binary
List Price: $16.95 $10.95
At Buy.com USA and Buy.com CA on 11-30-2008.
The world's first computing system, the abacus was an ingenious invention designed to perform speedy calculations through the movement of beads on a series of rods. The new edition of Dilson's marvelous book is even more user-friendly that the original; it comes with a working abacus that can be used in concert with its easy-to-follow and clear illustrations.
