ABACUS • Developed by Chinese • About 3000 BC • Beads that slides through rods
PASCALINE • Blaise Pascal, French Mathematician, invented the Pascaline between 1642 and 1644 • The Pascaline could only add and subtract numbers
STEPPED RECONER • Invented by Gottfried Wilhelm Liebnitz, a German mathematician in 1671 • The first Mechanical Machine invented • This machine can add, subtract, divide, multiply and even get the square root of a number
JACQUARDS LOOM • Invented by Joseph Jacquard a silk weaver in 1801 • The first machine to use punch card • His punched card system was adopted in the 20th-century as a control and data input system for many office machines and early digital computers.
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.