evolution / history of computer
TRANSCRIPT
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evolution / historyof Computer
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EARLY COMPUTING DEVICES
The AbacusThe first calculating device is known as the ABACUS. This device was invented some 5,000 years ago in China.
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THE ABACUS
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NAPIER’S BONES In 1617, John Napier invented a calculating device known as Napier’s Bones.
This calculating device was specially used for multiplications.
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Napier’s Bones
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THE PASCALINE CALCULATOR
In 1642, Blaise Pascal, a French mathematician, invented the Pascal calculator. This device, also known as the Pascaline. This device was limited to addition & subtraction only.
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THE PASCALINE CALCULATOR
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ELECTRO-MECHANICAL COMPUTING DEVICESDifference EngineIn 1821, Charles Babbage, a British mathematician professor, invented the Difference Engine. The machine had the capacity to perform calculations.
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DIFFERENCE ENGINE
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ANALYTICAL ENGINE
In, 1834, he invented another device which was a programmable mechanical calculator known as Analytical Engine.All the modern computers are based on the concept of Analytical Engine.
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ANALYTICAL ENGINE
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Electronic Computing Devices
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MARK 1The first electronic computer was invented by Howard Aiken in 1930.This computer had the capacity to perform three additions, one subraction and one multiplication per second.
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MARK I
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ENIAC
The first digital computer invented was known as ENIAC.ENIAC stands for Electronic Numerical Integrator and Calculator.
ENIAC
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ENIAC
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