What are some interesting books or articles about the abacus?

All subjects except one could calculate very rapidly without an abacus, probably relying upon its mental representation. ... Cookies are used by this site. Cookie ... An abacus is a calculating tool that has been used for centuries in various parts of the world. It consists of a frame with rods on which beads are moved to ... An abacus is an ancient tool used in mathematics. It is used for counting and performing mathematical operations such as addition, subtraction, multiplication, ... In ancient times, the Sumerians and Egyptians were known for using abacus-like devices for counting and arithmetic calculations, while China's first official ... Feb 19, 2025 ... Use of the abacus The abacus is used for mechanical addition, subtraction, multiplication, and division. The abacus is still frequently used ... Willowood Abamectin 0.15LV. This product is used for comparison purposes only and not available for purchase on ... Water Treatment Solutions for Austin Homes. Abacus Plumbing offers water softening, reverse osmosis water filtration, and whole-house carbon water ... Industry proven. Our most powerful software is used around the world by financial institutions just like yours. · Financial intelligence · Visual reporting. The mathematical abacus is a frame with beads or balls that ca be slid on wires or in slots for calculating or teaching arithmetic (The American Heritage ... To request for your personal data to be removed from the Abacus Alliance and no longer used for the purpose of direct marketing via post or connected TVs.