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What is Abacus? When and by whom it was invented? |
Answer» <p>An abacus, also known as a counting frame, is a calculating tool with beads that slide across on wires or rods.</p><p>May not answer this directly, butTim Cranmer inventedtheCranmer abacus. The oldest surviving counting board is the Salamis tablet (originally thought to be a gaming board), used by the Babylonians circa 300 B.C.,discoveredin 1846 on the island of Salamis. Theabacusis still used in China and Japan.</p> | |