What is Brothers Day?Brothers Day, celebrated on 24th May, is a special day to honor the bond between brothers. It's a time to appreciate the support, friendship, and memories you

History: Initial calculation tools: Abacus (about 3000 BC): One of the earliest tools for basic arithmetic operations.Mechanical calculators (17th century): Devices such as Blaise Pascal's Pascaline and Gottfried Wilhelm Leibniz's