EARLY COMPUTING TIMELINE ABACUS Abacus is an arithmetic tool usedmainlyin shops when calculating how much was the change, these are used for addition, substraction, division, multiplication and even it´ s used for squareroots! 2700 B.C PASCAL CALCULATOR One of the main aspects that made it useful is it's portability, it's made of a mechanic wheel that you can move to do the calculations. 1642 A.C LEIBNIZ MACHINE I 1672 A.C It´s a machine that works with gears, you turn each to make your multiplications or divisions as wanted by the user, it is similar to the pascal calculator (it do practically th same) ANALYTICAL MACHINE It was the first idea of a mechanical computer. Featuring an arithmetic logic unit and memory, it was made by Charles Babbage 1833 A.C TABULATING MACHINE FOR U.S. CENSUS 1890 A.C It revolutionized data processing. Using punched cards, it efficiently analyzed and detailed census information, anticipating the future of automated information processing systems.