3 ABACUS Developed by Chinese About 3000 BC Beads that slides through rods
4 PASCALINEBlaise Pascal, French Mathematician, invented the Pascaline between 1642 and 1644The Pascaline could only add and subtract numbers
5 STEPPED RECONERInvented by Gottfried Wilhelm Liebnitz, a German mathematician in 1671The first Mechanical Machine inventedThis machine can add, subtract, divide, multiply and even get the square root of a number
6 JACQUARDS LOOM Invented by Joseph Jacquard a silk weaver in 1801 The first machine to use punch cardHis punched card system was adopted in the 20th-century as a control and data input system for many office machines and early digital computers.
7 TABULATING MACHINE Invented by Herman Hollerith sometime in 1890 The machine treats information in the form of holes punched through a strip of paper.His tabulating machine pave way for the International Business Machine of today.