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Evolution of computing devices. EARLIEST COMPUTING DEVICES. 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.

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## Evolution of computing devices

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**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.

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